Related
**Disclaimer** If you don't understand what follows, don't attempt this. I'm not responsible for you softbricking your device,
This is a quick guide for how to install the new android without losing anything. You'll need fastboot for this. Also, before doing this, be sure to download the supersu cwm update zip, and have it on your sdcard. Make sure you also already have a custom recovery installed (I did twrp, but i'm sure cwm will work just as well). I would also suggest having a backup done, through titanium backup and through recovery, just incase.
First, download the factory images for the n7 from google's website. Decompress them (if you're in windows, you'll need winrar or something similar.) After you decompress the archive, there'll be another one inside (image-nakasi-jop40c.zip), decompress this one as well. Under here, you'll see the .img files for all the partitions. For now, go up one directory. You'll also see here bootloader-grouper-4.13.img. Once you have all this, reboot into the bootloader.
Once you're in the bootloader, you can update the bootloader to the new version (this step isn't needed, but I did it anyways). Plug into your pc, and type fastboot devices. Make sure it's not blank. If it is, you have to update drivers. If you can see the device, open up a command prompt, and cd to the directory that has the bootloader-grouper file. Type the following:
fastboot flash bootloader-grouper-4.13.img
then, after it's done, type:
fastboot reboot-bootloader
Now, you'll be booted back into the bootloader, it'll say 4.13. On to the rom.
cd into the folder image-nakasi-jop40c (make sure you see the files system.img and boot.img before you continue. If you don't see them, the next steps will do nothing but erase your kernel and system parition.)
now, you see the image files. Type the following (still in the bootloader)
fastboot erase system
fastboot flash system system.img
wait until it completes, then type:
fastboot erase boot
fastboot flash boot boot.img
Once this is done, hit the volume up on the device until it shows recovery mode on the top. When it does, push the power key and you'll boot into your recovery (shouldn't be touched.) Inside here, flash the supersu cwm zip file, which'll flash the superuser binary, and supersu. Once this is done, do a factory reset (removing your data and cache.) Boot into the rom.
Once it's booted, you'll notice your internal sd card appears to be empty (mine did, I was worried at first.) For some odd reason, it moved the entire contents of my sdcard into a folder on it called 0. When you get back into android, simply move the folder all up one level so they're in the proper place. You now have the rom booted, rooted, with all your data. Now, you can do a titanium restore to get all your stuff back.
My first boot got stuck for some reason. if it happens to you, just hold the power button and hard reboot. (I did this on 2 devices, it only happened to one of them, so I figured I'd give you all warning.)
Links:
SuperSu binary: https://docs.google.com/open?id=0B7a8xHNJlpgTR0ZkR1pWZWR2VzA
Google Factory Images: https://developers.google.com/android/nexus/images
Thanks for this.
I flashed the 4.2 ota in the dev section and I lost root. Can I just flash the supersu binary in cwm to regain root?
Thanks for this.. Apparently you found out too a clean 4.2 isn't rootable via typical methods.
That SuperSU package did the trick. I have to remember to keep a SuperSU binary on hand for these kinds of situations that SuperUser fails..
jefferson9 said:
Thanks for this.
I flashed the 4.2 ota in the dev section and I lost root. Can I just flash the supersu binary in cwm to regain root?
Click to expand...
Click to collapse
Yes. If you do it though cwm, you're not using any exploits, you're just inserting the superuser binary and supersu.apk into the proper places on the rom. On any nexus device, any rom, this will root it.
mstrk242 said:
Once it's booted, you'll notice your internal sd card appears to be empty (mine did, I was worried at first.) For some odd reason, it moved the entire contents of my sdcard into a folder on it called 0. When you get back into android, simply move the folder all up one level so they're in the proper place.
Click to expand...
Click to collapse
DANGER WILL ROBINSON!!
The "odd reason" is called "multiple users" - add a second user and they get a folder called 10.
tehSmoogs said:
DANGER WILL ROBINSON!!
The "odd reason" is called "multiple users" - add a second user and they get a folder called 10.
Click to expand...
Click to collapse
Exactly.
If everything goes right we should have an AOSP prerooted build in about *looks at watch* 20 minutes.... Unless there is a compile error or SU error. *laff*
Back to watching the scrolling terminal window
Just got this working on a mac...
did not update bootloader(couldnt get it to)
other than that, same commands except all fastboots are ./fastboot on a mac
the only other trick is i needed the fastboot and abd files in the jop40c folder...seems to have worked like a charm....im deff on 4.2 with su installed... and it looks like my data is still there...once google is done restoring i'll know just how sucessfull it is, but so far, seems to work!!!
kwhee07 said:
Just got this working on a mac...
did not update bootloader(couldnt get it to)
other than that, same commands except all fastboots are ./fastboot on a mac
the only other trick is i needed the fastboot and abd files in the jop40c folder...seems to have worked like a charm....im deff on 4.2 with su installed... and it looks like my data is still there...once google is done restoring i'll know just how sucessfull it is, but so far, seems to work!!!
Click to expand...
Click to collapse
I did this all on linux, just kind of adapted the guide for windows. I figured all the linux users would understand how to do it on their own. Glad to know it's the same for mac as well.
OK where did they put the developer options? Not in settings on my 32GB 4.2 device
Never mind. This: http://www.androidpolice.com/2012/1...hidden-in-android-4-2-heres-how-to-find-them/
rootbrain said:
OK where did they put the developer options? Not in settings on my 32GB 4.2 device
Never mind. This: http://www.androidpolice.com/2012/1...hidden-in-android-4-2-heres-how-to-find-them/
Click to expand...
Click to collapse
Settings - about tablet - build number
push it a few times and it will enable dev options
You have .bat file in the package.
Why so complicated?
I downloaded 4.2 from here:
http://android.clients.google.com/p...gned-nakasi-JOP40C-from-JZO54K.094f6629.zipia
I then just flashed it from recovery via CWM.
Done.
CWM asked me if I wanted to maintain root and of course I chose the correct answer on this, so now my N7 is running on a rooted 4.2.
Here is my method:
1. Download official 4.1.2 from http://forum.xda-developers.com/showthread.php?t=1929270 and 4.2 OTA image from http://forum.xda-developers.com/showthread.php?t=1989188
2. Boot into CWM (i have CWM touch installed)
3. Clear data and install 4.1.2, don't forget to turn on root in the installer
4. reboot check that root is fully working
5. reboot into recovery install 4.2
6. before reboot CWM will ask to disable recovery flash and protect root. Ansver yes to both questions
I'm confused, it says if you are already on a custom rom, just flash as usual.
What makes this different?
I was on stock ROM rooted with some system modifications, and this wwadd the only way I could get the update working...
Sent from my Nexus 7 using xda app-developers app
mstrk242 said:
For some odd reason, it moved the entire contents of my sdcard into a folder on it called 0. When you get back into android, simply move the folder all up one level so they're in the proper place. You now have the rom booted, rooted, with all your data. Now, you can do a titanium restore to get all your stuff back.
Click to expand...
Click to collapse
So I'm at the step listed above. I have 4.2 on my device but I can't seem to find this "0" folder. I'm browsing the /sdcard folder via adb shell. Am I looking at the wrong place? Do I have have the incorrect permissions? Or might it not be there?
Thanks.
Ill have to wait until a rooted rom is created, I have no comp.
Sent from my Nexus 7 using XDA Premium HD app
can I install image-nakasi-jop40c.zip directly without upgrading bootloader?
Zuk. said:
So I'm at the step listed above. I have 4.2 on my device but I can't seem to find this "0" folder. I'm browsing the /sdcard folder via adb shell. Am I looking at the wrong place? Do I have have the incorrect permissions? Or might it not be there?
Thanks.
Click to expand...
Click to collapse
Not advisable to move this folder - if it got moved to a new location by the o/s then there's probably a good reason why - maybe like 4.2 introducing multiple users
Each user appears to get their own "home" directory created in /mnt/shell/emulated/
Default user dir is "0"
Second user dir is "10"
Each contain the standard dir's from 4.1 and earlier.
Travelawyer said:
Why so complicated?
I downloaded 4.2 from here:
http://android.clients.google.com/p...signed-nakasi-JOP40C-from-JZO54K.094f6629.zip
I then just flashed it from recovery via CWM.
Done.
CWM asked me if I wanted to maintain root and of course I chose the correct answer on this, so now my N7 is running on a rooted 4.2.
Click to expand...
Click to collapse
You had two extra characters at the end of your link, but I fixed it above and it's good to go for others in the future. Just flashed it in TWRP, it didn't ask if I wanted to maintain root, hit reboot when it was complete and lost root, so it doesn't work for everyone - good news is that all my data remained intact without having to resort to advanced restoring my data from a backup....
When I tried the SuperSU binary root flash trick, I finally got root back. But don't think it's as easy to get to recovery! I had to obtain the TWRP Recovery one more time since it wiped it and put in place a recovery that did absolutely nothing but reboot the device after a few minutes, so you'll have to
Code:
fastboot flash recovery openrecovery-twrp-2.3.1.1-grouper.img
to get TWRP back.... Hope that helped everyone!
Hi, I know this is going to sound so stupid but I need help ASAP.
I was fooling around with installing different ROM's for my HTC One, I tried the Google Edition for a while and decided it wasn't for me as I lost the TV remote. I then tried to re-flash the Android Revolution HD 12 I had on before and it wouldn't flash. I thought a wipe would work but now I've succeeded in ending up with a TWRP recovery that works fine but no software whatsoever to flash or boot to. The phone says 'No OS Installed'
Every time I turn off the phone it also says that it doesn't appear to be rooted, do I want to install supersu? The phone says 'unlocked' with CID 11111111
I have totally fallen into the idiot trap, too much confidence and ambition, zero skill and talent.
NailFace said:
Hi, I know this is going to sound so stupid but I need help ASAP.
I was fooling around with installing different ROM's for my HTC One, I tried the Google Edition for a while and decided it wasn't for me as I lost the TV remote. I then tried to re-flash the Android Revolution HD 12 I had on before and it wouldn't flash. I thought a wipe would work but now I've succeeded in ending up with a TWRP recovery that works fine but no software whatsoever to flash or boot to. The phone says 'No OS Installed'
Every time I turn off the phone it also says that it doesn't appear to be rooted, do I want to install supersu? The phone says 'unlocked' with CID 11111111
I have totally fallen into the idiot trap, too much confidence and ambition, zero skill and talent.
Click to expand...
Click to collapse
You should be able to use this toolkit to install SU and also to sideload a rom zip from your PC to the phone to reinstall your ROM of choice. Sounds like you wiped your data partition entirely. Since you have S-off and Super CID you should have no problems loading another rom. Just have to use one of the creative ways to get it on the phone (sideload, USB-OTG adapter, etc.)
http://forum.xda-developers.com/showthread.php?t=2242635
crushalot said:
You should be able to use this toolkit to install SU and also to sideload a rom zip from your PC to the phone to reinstall your ROM of choice. Sounds like you wiped your data partition entirely. Since you have S-off and Super CID you should have no problems loading another rom. Just have to use one of the creative ways to get it on the phone (sideload, USB-OTG adapter, etc.)
http://forum.xda-developers.com/showthread.php?t=2242635
Click to expand...
Click to collapse
Thanks for your reply,
could you do a step by step guide for me please, I don't have an USB-OTG adaptor.
I cannot install the program, it says its not supported by my OS (im on Windows 8)
NailFace said:
Thanks for your reply,
could you do a step by step guide for me please, I don't have an USB-OTG adaptor.
Click to expand...
Click to collapse
The steps should be here in the guide:
http://forum.xda-developers.com/showthread.php?t=2325853
Also here for sideload:
http://forum.xda-developers.com/showthread.php?t=2318497
crushalot said:
The steps should be here in the guide:
http://forum.xda-developers.com/showthread.php?t=2325853
Also here for sideload:
http://forum.xda-developers.com/showthread.php?t=2318497
Click to expand...
Click to collapse
I really need a more step by step guide, I've ****ed things up already so I think I need a baby walk through
NailFace said:
I really need a more step by step guide, I've ****ed things up already so I think I need a baby walk through
Click to expand...
Click to collapse
Well the easiest way to do a sideload is using the All in One tool. Do you have access to any other PC that have Windows 7 or XP? I don't have a win 8 system to try to assist with compatibility mode with the one.exe tool.
If no other PC options are available then we will have to go the long way which will involve installing ADB like in this guide: (Under Installation section - It has 5 steps for installing ADB)
http://forum.xda-developers.com/showthread.php?t=1427008
Once ADB is installed we can use these steps from the sideload guide that I posted:
Make Sure HTC Drivers are installed and ADB is already working
1. Reboot into TWRP
2. in TWRP, Hit advanced and find Sideload
3. Swipe to start Sideload
4. Open a CMD Prompt window and Change Directories to where your adb.exe is
5. type adb devices and it should show your device connected and say sideload
6. Your ZIP file should already be in your adb folder - See Example Below
7. You are now ready to push the zip.....
8. type adb sideload nameofzip.zip <------------See Example Below
9. Wait until it says 100% and reboot back into recovery to flash the ROM
10. If hitting power does not make the screen come one, type adb reboot recovery
11. if adb reboot recovery does not work, hold power and volume down until it reboots to fastboot then go to recovery
crushalot said:
Well the easiest way to do a sideload is using the All in One tool. Do you have access to any other PC that have Windows 7 or XP? I don't have a win 8 system to try to assist with compatibility mode with the one.exe tool.
If no other PC options are available then we will have to go the long way which will involve installing ADB like in this guide: (Under Installation section - It has 5 steps for installing ADB)
http://forum.xda-developers.com/showthread.php?t=1427008
Once ADB is installed we can use these steps from the sideload guide that I posted:
Make Sure HTC Drivers are installed and ADB is already working
1. Reboot into TWRP
2. in TWRP, Hit advanced and find Sideload
3. Swipe to start Sideload
4. Open a CMD Prompt window and Change Directories to where your adb.exe is
5. type adb devices and it should show your device connected and say sideload
6. Your ZIP file should already be in your adb folder - See Example Below
7. You are now ready to push the zip.....
8. type adb sideload nameofzip.zip <------------See Example Below
9. Wait until it says 100% and reboot back into recovery to flash the ROM
10. If hitting power does not make the screen come one, type adb reboot recovery
11. if adb reboot recovery does not work, hold power and volume down until it reboots to fastboot then go to recovery
Click to expand...
Click to collapse
I owe you a beer, thank you very much. Everything working now.
Disclaimer: If you are not comfortable with using Fastboot and ADB and editing system files than this guide might not be for you. At this point this is what I have to offer.
Click here for the unofficial twrp image - Latest version as of 12/27/14
So getting right into it.
1. Turn on ADB mode on the watch by going to about and tapping the build info 7 times.
2. Download ADB and Fastboot utilties
3. Plug the watch into the computer and your phone should vibrate and ask you to accept the computers fingerprint, tick the check box to always allow and hit ok
4. Open up a command prompt or terminal inside of where the ADB utilities are located and enter
Code:
adb reboot bootloader
This next step will wipe your data!
5. Now you should be in fastboot, go ahead and on the terminal use the next code and follow prompts to unlock
Code:
fastboot oem unlock
6. Now after you re-set up your watch again you will need to do step 1 and 3 again.
Please do not skip step 6!
7. Go ahead and issue
Code:
adb reboot bootloader
8. Flash unofficial twrp, make sure the recovery image file is in the same location as fastboot than issue
Code:
fastboot flash recovery YOURIMGNAMEHERE.img
9. Upon successfully doing that you should have twrp installed
10. Lots in one step here, download the latest supersu.zip flashable file and put it in the same folder as ADB use the proper name of what you downloaded. Issue
Code:
adb push SUPERSUNAMEHERE.zip /sdcard/
11. Issue
Code:
adb reboot recovery
12. than using the very tiny TWRP and somewhat messed up go ahead and use it to install the supersu.zip under the folder /sdcard
13. Enjoy root and twrp.
I will make this guide into a much easier Java program in the very near future to make it easier to use.
This was typed up pretty fast and it is kinda hacky, I will work on a bat script and a shell script if we have enough osx users here. I'm sure someone will come along and make this better if I don't get around to it.
Credits:
Dees-Troy for his TWRP support for dory our fish brother device which worked on our device
Chainfire for all his hard work these many years
Q: ADB complains there is no device listed.
A: Install universal ADB drivers and then go to device manager and under the device with a yellow warning icon go to update driver, Browse my computer, let me pick from list of device drivers, than Google ADB interface. If it still complains turn off debugging, than turn it back on, revoke authorization, then disable and re-enable again.
One more just in case.
Great work!!
Just got the watch today and couldn't be happier. Custom kernel, TWRP and root (well sort of) all within 6 hours of having this watch.
I say root (sort of) because SU is force closing when running su in adb shell. First time it crashed adb on PC and had to reboot watch. Now it just force closes on my watch and adb exits on PC. What is the most current version of SuperSU? I have 1.94 from Chainfire's site.
Thank you SO MUCH for this! Do you or your team have a paypal?
hatefuel19 said:
Just got the watch today and couldn't be happier. Custom kernel, TWRP and root (well sort of) all within 6 hours of having this watch.
I say root (sort of) because SU is force closing when running su in adb shell. First time it crashed adb on PC and had to reboot watch. Now it just force closes on my watch and adb exits on PC. What is the most current version of SuperSU? I have 1.94 from Chainfire's site.
Thank you SO MUCH for this! Do you or your team have a paypal?
Click to expand...
Click to collapse
The latest supersu is version 2.36 dated 11.27.2014. 1.94 is well over a year old, you need to update for sure that is why you are force closing.
I figured that's what it was. Feeel real dumb for not finding the newest version the first time. Also most current is now 2.37 XD
Edit: That got it! Thanks tonu!
hatefuel19 said:
I figured that's what it was. Feeel real dumb for not finding the newest version the first time. Also most current is now 2.37 XD
Edit: That got it! Thanks tonu!
Click to expand...
Click to collapse
I'm here to help! I'm working on adding other mods to my other thread right now I'm working on getting busybox working.
Thanks for doing all of this work.
I was hoping you could help me with a step I am stuck on.
10. Lots in one step here, download the latest supersu.zip flashable file and put it in the same folder as ADB. Issue "adb push SUPERSUNAMEHERE.zip /sdcard/
When I do this it is saying permission denied. Also, should the watch be in recovery or fully booted when I run this command?
Thanks
---------- Post added at 09:31 PM ---------- Previous post was at 09:28 PM ----------
jimmydigital00 said:
Thanks for doing all of this work.
I was hoping you could help me with a step I am stuck on.
10. Lots in one step here, download the latest supersu.zip flashable file and put it in the same folder as ADB. Issue "adb push SUPERSUNAMEHERE.zip /sdcard/
When I do this it is saying permission denied. Also, should the watch be in recovery or fully booted when I run this command?
Thanks
Click to expand...
Click to collapse
Disregard I did it again and for some reason it worked. Maybe I need to reboot first.
Recovery
I went through your command and everything worked until I ran:
fastboot flash recovery UNOFFICIAL-openrecovery-twrp-2.8.0.0-lenok.img
Now the device just boots into the recovery and not into the system. The system/data partitions keep saying:
E:Unable to mount /data
E:Unable to mount /system
I am very comfortable with fastboot and adb so I do not know what I did wrong here.
Any ideas?
adamrobles said:
I went through your command and everything worked until I ran:
fastboot flash recovery UNOFFICIAL-openrecovery-twrp-2.8.0.0-lenok.img
Now the device just boots into the recovery and not into the system. The system/data partitions keep saying:
E:Unable to mount /data
E:Unable to mount /system
I am very comfortable with fastboot and adb so I do not know what I did wrong here.
Any ideas?
Click to expand...
Click to collapse
Try reflashing the recovery IMG again. And check back here.
Sent from my A0001 using XDA Free mobile app
reflashed
tonu42 said:
Try reflashing the recovery IMG again. And check back here.
Sent from my A0001 using XDA Free mobile app
Click to expand...
Click to collapse
I reflashed the recovery you provided and I keep rebooting to system but it takes me to twrp.
I am in the process of downloading the system dump from another thread to hopefully flash those to get back into the system.
adamrobles said:
I reflashed the recovery you provided and I keep rebooting to system but it takes me to twrp.
I am in the process of downloading the system dump from another thread to hopefully flash those to get back into the system.
Click to expand...
Click to collapse
The dump is extracted from the system.img, you won't be able to flash it in any way. None of this guide touches system files besides the root stuff which shouldn't affect boot. Try flashing the stock recovery.img instead.
tonu42 said:
The dump is extracted from the system.img, you won't be able to flash it in any way. None of this guide touches system files besides the root stuff which shouldn't affect boot. Try flashing the stock recovery.img instead.
Click to expand...
Click to collapse
Thank you for that information, I stopped the download of the dump.
Downloading the stock recovery now.
---------- Post added at 02:24 PM ---------- Previous post was at 02:10 PM ----------
tonu42 said:
The dump is extracted from the system.img, you won't be able to flash it in any way. None of this guide touches system files besides the root stuff which shouldn't affect boot. Try flashing the stock recovery.img instead.
Click to expand...
Click to collapse
I must have skipped a step...
installed stock recovery
booted into the watch system
enabled adb debugging
reboot to bootloader
install your recovery image
rebooted
pushed supersu
rebooted to twrp
installed supersu
rebooted to system
adb shell - verified root!
You are awesome! Thank you for taking the time to help me!
HYPE for 5.0.1
'm Hype! can't wait to flash the first 5.0.1 system dump on this as stated by +Darek Ross we MAY be receiving update as early as today!
I did this yesterday, and run into the same problem - TWRP spitting out errors when flashing
It was caused by NOT rebooting after unlocking bootloader, but proceeding with the flash rightaway - this apparently leaves the watch in an empty state (no /sdcard or /system contents) and it needs to boot up at least once before you flash anything
So the correct procedure is like this
1) enable development options
2) enable usb debugging
3) adb reboot-bootloader
4) fastboot oem unlock
5) let the watch boot normally, pair with your phone, enable development options and usb debugging again
6) adb reboot-bootloader
7) fastboot flash recovery recovery.img
8) fastboot reboot
9) adb push supersu.zip /sdcard/
10) adb reboot recovery
11) flash supersu.zip
Apparently, there is a problem when the original kernel is not present after "fastboot oem unlock" - the watch will be left empty, while on the original kernel it "reinstalls"
I typed this from memory, but I think you should know how these things work anyway, as there's not much for a "normal" user to do anyway... yet...
zvieratko said:
I did this yesterday, and run into the same problem - TWRP spitting out errors when flashing
It was caused by NOT rebooting after unlocking bootloader, but proceeding with the flash rightaway - this apparently leaves the watch in an empty state (no /sdcard or /system contents) and it needs to boot up at least once before you flash anything
So the correct procedure is like this
1) enable development options
2) enable usb debugging
3) adb reboot-bootloader
4) fastboot oem unlock
5) let the watch boot normally, pair with your phone, enable development options and usb debugging again
6) adb reboot-bootloader
7) fastboot flash recovery recovery.img
8) fastboot reboot
9) adb push supersu.zip /sdcard/
10) adb reboot recovery
11) flash supersu.zip
Apparently, there is a problem when the original kernel is not present after "fastboot oem unlock" - the watch will be left empty, while on the original kernel it "reinstalls"
I typed this from memory, but I think you should know how these things work anyway, as there's not much for a "normal" user to do anyway... yet...
Click to expand...
Click to collapse
My guide is setup like the one you put there. In order to get adb working again you need to re setup the watch step 6. Read the instructions carefully. I'll post a batch script later to simplify this.
Sent from my A0001 using XDA Free mobile app
Step 6 doesn't really say "you need to do this, OR ELSE", it seems like you just rehash the factory reset thing
And you should put step 10 before step 6, it can't really be done in that order...
but again, I guess the people trying this should now how it works, so no biggie, but since a few of us got hit by that "no initial boot" issue, it would be better to put a note in there
zvieratko said:
Step 6 doesn't really say "you need to do this, OR ELSE", it seems like you just rehash the factory reset thing
And you should put step 10 before step 6, it can't really be done in that order...
but again, I guess the people trying this should now how it works, so no biggie, but since a few of us got hit by that "no initial boot" issue, it would be better to put a note in there
Click to expand...
Click to collapse
By default debugging is disabled, I'm not sure how you were able to issue an ADB command on step 7 with out first performing step 6.
Aaah, sorry, should have been "after step 6"
another option is to do adb push with recovery loaded
I guess that's why I got that error before, because I combined 5+8 and flashed the recovery, but TWRP was unable to revive the watch from factory reset state (which makes me think it should not be on the watch unless needed...)
zvieratko said:
Aaah, sorry, should have been "after step 6"
another option is to do adb push with recovery loaded
I guess that's why I got that error before, because I combined 5+8 and flashed the recovery, but TWRP was unable to revive the watch from factory reset state (which makes me think it should not be on the watch unless needed...)
Click to expand...
Click to collapse
Ah I see, yea the guide is written as the absolute minimum to work right now. Like I said later today I'll try to post a script that automates all of this, its much easier.
Preamble
As the title suggests, I had a Nexus 5 running stock Android 5.0, with root and TWRP, and wanted to update to Android 5.0.1 (without losing all my data, of course). I couldn't find any guides for my particular circumstances, so after working out how to do it myself, I thought I'd share my method.
Note: This guide is not for the uninitiated. Be prepared to Google something for yourself if you don't understand it.
Prerequisites
Before starting this guide, you should have:
A Nexus 5 that running stock Android. The presence of root/Xposed/custom recovery (maybe custom kernels?) shouldn't be relevant, but I can't vouch for the efficacy of this guide if you've done something obscure to your install.
Android SDK tools, specifically the ADB and fastboot binaries. Additional USB drivers may be required on Windows.
The factory image for the Android version you are currently running.
1. Uninstall root and other /system modifications
If you have rooted your Android, and/or installed BusyBox, Xposed or other modifications to /system, you will need to uninstall these modifications. Failing to do so will cause the OTA to complain that there's something funky going on in your /system partition.
You may be able to manually uninstall each of these modifications, but this was not enough for my install – doing a ‘Full unroot’ in SuperSU still left behind files in /system. The easiest way to uninstall all /system modifications is to reflash the /system partition.
Extract the Nexus 5 factory image (e.g. hammerhead-lrx21o-factory-01315e08.tgz), yielding a directory with files such as flash-all.bat and image-hammerhead-XXXXXX.zip. Do not use the flash-all script, as this will unnecessarily wipe all data on the device.
Extract the image-hammerhead-XXXXXX.zip file, specifically the system.img file.
Open a command prompt/terminal window.
Connect the phone to the computer with a USB cable.
Boot the phone into the bootloader.
Method 1: Power down the phone, then hold VolUp + VolDn + Power until the phone boots into the bootloader.
Method 2: From the terminal, run adb reboot bootloader while the phone is still powered on.
From the terminal, run fastboot flash system /path/to/system.img.
2. Uninstall any custom recovery
Custom recoveries don't seem to support OTA updates, making it necessary to uninstall the custom recovery by reflashing the stock recovery.
Extract the recovery.img file from the factory image, as in Part 1.
Open a command prompt/terminal window, connect the phone to the computer, and boot into the bootloader, as in Part 1.
From the terminal, run fastboot flash recovery /path/to/recovery.img.
Optional: Reflash boot.img and/or cache.img
Some users have reported that reflashing system.img was not sufficient, and that reflashing boot.img and/or cache.img was also necessary. I did not have this problem, but if you do:
Extract the boot.img and/or cache.img files from the factory image, as in Part 1.
Open a command prompt/terminal window, connect the phone to the computer, and boot into the bootloader, as in Part 1.
From the terminal, run fastboot flash boot /path/to/boot.img.
From the terminal, run fastboot flash cache /path/to/cache.img.
3. Apply the OTA update
The simple part. In the bootloader, use the VolUp/VolDn buttons to select ‘Start’, then press the Power button, to reboot into Android. Follow the system update instructions to install the OTA update.
4. Reflash the custom recovery and re-root
Also self-explanatory.
Hey,
I just wanted to say thanks. This totally fixed the problem I was having. I also want to add that after I flashed the system.img, I was getting errors related to "EMMC:/dev/block/platform/msm_sdcc.1/by-name/boot" with a bunch of numbers after. I googled it and found I had to also flash boot.img, and after that, the OTA worked fine. I would assume if anyone else gets errors like this, they should flash whatever img it shows in the error (ie: mine said /by-name/boot so I flashed boot.img).
-BGM
It worked for me
I've always been using a toolkit for my rooting purposes, I have done Full Unroot on SuperSU, but still getting an error when trying to update to 5.0.1
Will flashing stock wipe everything(whatsapp image, camera's,messages, etc etc)on my phone?
azlan96 said:
I've always been using a toolkit for my rooting purposes, I have done Full Unroot on SuperSU, but still getting an error when trying to update to 5.0.1
Will flashing stock wipe everything(whatsapp image, camera's,messages, etc etc)on my phone?
Click to expand...
Click to collapse
I also had problems using ‘Full Unroot’ in SuperSU. It's not actually as ‘full’ as it sounds.
Flashing a full factory image would normally wipe everything, but carefully following this guide will only reset the /system partition, not any user data.
I'd like to say thank you very much! I was looking for this kind of tutorial... I encountered an error while following all the steps because I forgot I had a custom kernel. So I wanted to add that if you have a custom kernel remember to do the same steps as described above for the kernel (return to stock) and then follow the system and recovery steps afterwards.
If you don't like running commands in terminal you can use Nexus Root Toolkit, on advanced, you have all the commands you need available.
Thank you very much RunasSudo
Taiyo85 said:
I'd like to say thank you very much! I was looking for this kind of tutorial... I encountered an error while following all the steps because I forgot I had a custom kernel. So I wanted to add that if you have a custom kernel remember to do the same steps as described above for the kernel (return to stock) and then follow the system and recovery steps afterwards.
If you don't like running commands in terminal you can use Nexus Root Toolkit, on advanced, you have all the commands you need available.
Thank you very much RunasSudo
Click to expand...
Click to collapse
I have my ADB and Fastboot ok as confirmed by nexus root toolkit, but I am not sure on how to use terminal.. I launched command prompt but it doest recognise all the commands..
Tried Flash Stock + Unroot on Nexus Root Toolkit but the software will crash (fastboot.exe has stopped responding)
I am really clueless on what to do next..
azlan96 said:
I have my ADB and Fastboot ok as confirmed by nexus root toolkit, but I am not sure on how to use terminal.. I launched command prompt but it doest recognise all the commands..
Tried Flash Stock + Unroot on Nexus Root Toolkit but the software will crash (fastboot.exe has stopped responding)
I am really clueless on what to do next..
Click to expand...
Click to collapse
Flash Stock + Unroot wipes everything and defeats the purpose of the tutorial made by RunasSudo
First and foremost you should download Android SDK (Tools only) on http://developer.android.com/sdk/index.html and then ask to install the extra: Google USB Driver.
With Nexus Root Toolkit you don't need terminal, click on advanced and you should see options to flash through fastboot the system only, recovery and kernel. It is pretty straighforward and it asks where the .img are in your computer
Thanks! This guide worked.
For Ubuntu users, you need to install adb and fastboot with these commands :
sudo add-apt-repository ppahablet-team/tools && sudo apt-get update (optional)
sudo apt-get install android-tools-adb android-tools-fastboot
Thanks for the great step by step.
As with some of the other posters, re-flashing system.img was not enough for me, I had to also re-flash the boot.img. Once that was done, I had no problems side loading the update and am now running LRX22C.
I only seem to fiddle with adb once a year - when it OTA time comes - and can never seem to remember some of the steps that need to be taken. Reading through some of the other threads, I have a feeling a lot of people who rooted/custom recovery and cant do the OTA are going to be doing complete image re-flashes when this guide makes that completely unecessary.
thanks again,
.d
BananasGoMoo said:
I googled it and found I had to also flash boot.img, and after that, the OTA worked fine.
Click to expand...
Click to collapse
datcon said:
As with some of the other posters, re-flashing system.img was not enough for me, I had to also re-flash the boot.img.
Click to expand...
Click to collapse
Thanks for the feedback! I've added a note about boot.img to the OP.
+1 for flashing boot.img worked perfect after I did that.
I tried with this tutorial. I flashed system and recovery and then restart. Confirm OTA but I get ERROR.
Then I flashed boot as it was described. Now I don't get OTA In About phone, I'm still on 5.0.0, Check for updates now don't find update
Any idea?
UPDATE - UPDATE: After hour now it is here ... super, it works.
This walkthrough was most helpful! Ended up replacing the boot.img as well since I had ElementalX installed. My apps are optimizing as we speak. Thank you!
Worked for me. What a hassle!
Here is a summary of the process for those looking for a less wordy procedure, with a few added steps:
Download Nexus 5 5.0 (LRX21O) file (note: NOT 5.0.1 yet) https://developers.google.com/android/nexus/images
Unzip via 7-zip multiple times in order to get boot.img, recovery.img, system.img
Enable USB debugging: http://www.kingoapp.com/root-tutorials/how-to-enable-usb-debugging-mode-on-android-5-lollipop.htm
Plug phone into PC > cmd prompt where adb is installed > type "adb devices" to ensure connection is valid (will need to authorize via popup on phone > then "adb devices" should return your device id and "device"; if it says "unauthorized" then look for the popup on your phone)
adb reboot bootloader
Put system.img, recovery.img, and boot.img in same folder as fastboot.exe
Run commands:
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot erase cache (this is optional. I didn't have to do it, but you might)
Use Volume Up/Down to select Start > press Power Button to reboot
Update via Settings > About Phone > System Update
Re-flash TWRP recovery:
Get the file from here: http://forum.xda-developers.com/showpost.php?p=57580889&postcount=1
adb reboot bootloader
fastboot flash recovery openrecovery-twrp-2.8.1.0-hammerhead.img
Paul22000 said:
Worked for me. What a hassle!
Here is a summary of the process for those looking for a less wordy procedure, with a few added steps:
1. Download Nexus 5 5.0 (LRX21O) file (note: NOT 5.0.1 yet) https://developers.google.com/android/nexus/images
2. Unzip via 7-zip multiple times in order to get boot.img, recovery.img, system.img
3. Enable USB debugging: http://www.kingoapp.com/root-tutorials/how-to-enable-usb-debugging-mode-on-android-5-lollipop.htm
4. Plug phone into PC > cmd prompt where adb is installed > type "adb devices" to ensure connection is valid (will need to authorize via popup on phone > then "adb devices" should return your device id and "device"; if it says "unauthorized" then look for the popup on your phone)
5. adb reboot bootloader
6. Put system.img, recovery.img, and boot.img in same folder as fastboot.exe
7. Run commands:
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash boot boot.img
8. Use Volume Up/Down to select Start > press Power Button to reboot
9. Update via Settings > About Phone > System Update
Click to expand...
Click to collapse
Maybe you could add `fastboot erase cache` as stepp 8.
gee2012 said:
Maybe you could add `fastboot erase cache` as stepp 8.
Click to expand...
Click to collapse
I added it to step 7, thanks. :good: I also cleaned up the formatting and added step 10 about re-flashing TWRP.
Loading problem
I flashed system, recovery & boot images strictly following the instructions, restarted the phone. It got stuck in loading where balls in four colors keep running for half an hour. Shall I keep waiting? I think there must be something wrong. Your advises are welcome.
guangy said:
I flashed system, recovery & boot images strictly following the instructions, restarted the phone. It got stuck in loading where balls in four colors keep running for half an hour. Shall I keep waiting? I think there must be something wrong. Your advises are welcome.
Click to expand...
Click to collapse
Try flash the partitions again. If it's still not working, you may need to reflash a factory image.
RunasSudo said:
Try flash the partitions again. If it's still not working, you may need to reflash a factory image.
Click to expand...
Click to collapse
I flashed the cache image as well, then the problem solved. Thanks
Okay so I got my oneplus 3t today and I updated it to Nougat via the ota file all good so far. I then decided that I wanted to install a custom rom so I downloaded twrp supersu etc everything needed to root and install the rom. Here's where it went wrong in knowingly I downloaded the wrong twrp flashed it and it would just hang at the flash screen for twrp. Anyway after hours of trying to install a recovery I managed to get a stock one to semi work, now it turns out I don't know how I did it but my phone won't even boot it just turns on and goes straight to fastboot mode. I managed to get a stock recovery semi working but it won't let me install the stock rom from internal storage and I've tried updating through adb and it will hang at a random percentage for a good 20 mins and then just fail. Really need some help here it would be great, thanks
Hi,
If you can get into fastboot mode then the best recourse is through there. Hope you properly OEM unlocked your device.
First of all, you MUST have the latest adb/fastboot binaries and FOR SURE have the correct drivers.
Follow the links on this XDA article to download the latest adb and fastboot binaries: https://www.xda-developers.com/google-releases-separate-adb-and-fastboot-binary-downloads
This is the link for the Windows binary: https://dl.google.com/android/repository/platform-tools-latest-windows.zip
Extract all the contents of the zip file in a folder on your PC.
Then, also make sure to have THE CORRECT twrp, 3.0.2.0 or 3.0.3.0. This is the link but currently it is down: https://twrp.me/devices/oneplus3t.html
Download THE IMAGE, NOT FLASHABLE ZIP and put it in the same folder as the android platform tools above.
Finally, download the latest complete 3T firmware from OnePlus from this link: http://downloads.oneplus.net/devices/oneplus-3t/
I STRONGLY recommend not to use an update zip, even a full ROM update zip as that one might not include certain firmware images.
Put THE ZIP on the same folder as the others, DO NOT EXTRACT ANYTHING.
On your PC, open a command prompt in the folder where you extracted the android platform tools and run the following: fastboot boot twrp-3.0.3-0-oneplus3t.img (assuming you downloaded the 3.0.3 version of twrp).
Your phone will TEMPORARILY accept the twrp recovery as a boot image and boot from there. NOTHING IS BEING PERMANENTLY WRITTEN AT THIS TIME.
After that, enter TWRP's Wipe menu and wipe system, data and cache.
Finally, use TWRP's Advanced menu and enter adb sideload mode. Once there slide that slider to the right to enable adb mode and return to your PC and enter the following command in the command prompt:
adb sideload OnePlus3TOxygen_28_OTA_029_all_1612131737_17e7161d2b234949.zip (assuming you downloaded the 3.5.4 binary from OnePlus).
TWRP should properly flash the OnePlus ROM and hopefully, return you to proper function. You can then update back to Nougat.
Hope that helped!
Yeah that sorted it thanks a lot
Use the emergency tool for OP3T and start from scratch:
https://forums.oneplus.net/threads/unbrick-guide-oneplus-3t.481214/
@KeyperOS
I'm trying to follow this guide, but did you miss something out here?
On your PC, open a command prompt in the folder where you extracted the android platform tools and run the following: fastboot boot twrp-3.0.3-0-oneplus3t.img (assuming you downloaded the 3.0.3 version of twrp).
Your phone will TEMPORARILY accept the twrp recovery as a boot image and boot from there. NOTHING IS BEING PERMANENTLY WRITTEN AT THIS TIME.
Click to expand...
Click to collapse
Once I do "fastboot boot twrp" and get a success, then what?
Do I need to somehow reboot the phone into TWRP - because that didn't happen on its own.
If so, how do I do this?
Thanks,
jackmacbunton said:
Yeah that sorted it thanks a lot
Click to expand...
Click to collapse
Glad that sorted it out
PugRallye said:
@KeyperOSI'm trying to follow this guide, but did you miss something out here?
Once I do "fastboot boot twrp" and get a success, then what? Do I need to somehow reboot the phone into TWRP - because that didn't happen on its own. If so, how do I do this? Thanks,
Click to expand...
Click to collapse
My instructions while detailed are not step-by-step. I expect the person reading them to have their PC configured correctly and at least a vague idea of what they're doing.
So, assuming you put the correct TWRP image (my command uses the name of the image for TWRP 3.0.3.0, you MUST alter it to reflect the actual image's filename if it's not that) on the same folder as the fastboot binary then yeah, the command
fastboot boot twrp-3.0.3-0-oneplus3t.img
should have made your phone reboot and enter into the TWRP image that you had on your PC.
If it didn't then you did sth else wrong before that.
Either you didn't OEM unlock your phone when you still could or you didn't use the android platform tools that I linked or you don't have the correct ADB drivers installed on your PC.
Start from there.
Hope that helped!
Thanks for your help @KeyperOS - I know where I went wrong...
To save some time, when I tried to reboot into TWRP, I typed "fastboot boot " then I dragged and dropped the TWRP img file onto that line in the cmd window (rather than typing the filename manually) - when you do that, it appears to include the full path to the img - it was that that was causing the problem.
When I typed the TWRP filename manually, it worked.
The only thing that caught me out was after I'd installed the ROM (via adb sideload) I tried to reboot the device from TWRP recovery - this seemed to just hang. In the end I just powered off the phone using the power key, then powered it back up as per usual.
Checked that the phone booted to the first of the setup screens, then powered off/booted into fastboot mode, relocked the bootloader and it seems to be OK.
I'm now back on 3.5.4 again, which was what I was trying to do...
4.0.0/1 had felt a bit laggy, and I'd sensed some issues with wifi and BT, I can now run 3.5.4 and see how it compares - was I just imagining it?
Thanks again for the guide and your help - I really appreciated it
@PugRallye
Windows' command prompt has an autocomplete feature. If you want it to add the name of a file, type a couple letters and then present TAB, it's gonna complete the filename itself and if it's the wrong file you can keep tapping tab to cycle through all the options.
Really glad it worked out Btw [emoji4]
In my experience, 3.5.4 was great but 4.0 is a step up in both battery life, which IME is amazing and features, with it I almost didn't need root and certainly don't need xposed which was a first.