Flash updated bootloader and radio? - Nexus 6 Q&A, Help & Troubleshooting

So... I was on 5.0 stock and on CM12. I went to CM12.1 without going back to stock to get the updated 5.1.1 radio and bootloader.
How do I get the updated radio and bootloader now that I'm on CM12.1? I think that this will fix the issue with sending multiple texts while on LTE and some odd pic messaging download issues I'm having. Never done this before, so if someone can make a "for dummies" guide that'd be useful. I can't find much else out there on this so I'm sure it will benefit others to come across this thread. Thanks!

agentfazexx said:
So... I was on 5.0 stock and on CM12. I went to CM12.1 without going back to stock to get the updated 5.1.1 radio and bootloader.
How do I get the updated radio and bootloader now that I'm on CM12.1? I think that this will fix the issue with sending multiple texts while on LTE and some odd pic messaging download issues I'm having. Never done this before, so if someone can make a "for dummies" guide that'd be useful. I can't find much else out there on this so I'm sure it will benefit others to come across this thread. Thanks!
Click to expand...
Click to collapse
Bootloader has absolutely nothing to do with SMS. There are threads in general that have all radio's

agentfazexx said:
So... I was on 5.0 stock and on CM12. I went to CM12.1 without going back to stock to get the updated 5.1.1 radio and bootloader.
How do I get the updated radio and bootloader now that I'm on CM12.1? I think that this will fix the issue with sending multiple texts while on LTE and some odd pic messaging download issues I'm having. Never done this before, so if someone can make a "for dummies" guide that'd be useful. I can't find much else out there on this so I'm sure it will benefit others to come across this thread. Thanks!
Click to expand...
Click to collapse
Follow method 2 and only fastboot flash the bootloader...img and radio...img. > http://forum.xda-developers.com/nexus-6/general/guide-flash-factory-images-nexus-6shamu-t2954008

rootSU said:
Bootloader has absolutely nothing to do with SMS. There are threads in general that have all radio's
Click to expand...
Click to collapse
So don't worry about the bootloader and just flash the radio?

agentfazexx said:
So don't worry about the bootloader and just flash the radio?
Click to expand...
Click to collapse
Yes exactly. The bootloader is used during the boot process. Once it hands off to the relevant kernel (android /recovery) its job is done so shouldn't affect anything within android.

Is radio-shamu-d4.0-9625-02.101.img current?

rootSU said:
Yes exactly. The bootloader is used during the boot process. Once it hands off to the relevant kernel (android /recovery) its job is done so shouldn't affect anything within android.
Click to expand...
Click to collapse
Figured as much, just wanted to be thorough.

Related

[Q] I've tried and tried and researched galore.

All I would like to do is get my (not unlocked, but un-rooted) back to a stock recovery (I think?) and a stock OS. I want to be able to do updates OTA as they arrive on my phone, and the only reason I rooted in the first place was to get Gingerbread from CM7 and they didn't work. It got stuck in a endless boot loop and once I finally got a nightly working, it wasn't even worth it to me anymore.
I have used this thread: http://forum.xda-developers.com/showthread.php?t=614850
and done hours and days of research to try and solve my problem and get me to where I would like to be. I'd like to think I am not a noob to Android but clearly I am and I can't achieve 100% of my goal.
Where I am currently: Stock image, not sure of recovery, unrooted, bootloader unlocked.
Where I would like to be: Stock everything (I know I cannot relock the bootloader) just like when I bought it, so I can patiently wait for Gingerbread to push OTA whenever Google solves the issues.
Thank you and I apologize.
That guide has pretty much all the information you need. Flashing the stock HTC images and stock recovery will enable you to get OTA updates.
Read my signature, find "Unroot/restore" guide, look for the part for unlocked bootloaders.
Clearly that did not work for me or I would not have posted my concern.
@Jack_R1 I will attempt this again, thanks.
rynstphn said:
Clearly that did not work for me or I would not have posted my concern.
@Jack_R1 I will attempt this again, thanks.
Click to expand...
Click to collapse
You didn't explain where you got stuck, what you attempted, what went wrong and couldn't even state your recovery image. The guide you linked to is there for a reason, it works, however onlyif you follow it correctly without jumping in with 2 feet. If in future you require more precise help perhaps you should give precise information.
Perhaps the OP has encountered some of the issues i've posted about HERE?
Don't mean to kind of hi-jack this thread...
Don't mean to kind of hi-jack this thread but on the related topic of rooting the N1...is there some way to root it and still receive the OTA update for gingerbread(whenever it will come out)?
I did look through the threads and found nothing related unless it was further discussed on page x of 25, for example.
Also, are all wallpapers 960/980 by 800 for the N1 and other android phones? Is this so that when you scroll through screens you will still be able to see the image? That was the only possible answer I could think of.
Thanks in advance.
CTR01 said:
Don't mean to kind of hi-jack this thread but on the related topic of rooting the N1...is there some way to root it and still receive the OTA update for gingerbread(whenever it will come out)?
I did look through the threads and found nothing related unless it was further discussed on page x of 25, for example.
Also, are all wallpapers 960/980 by 800 for the N1 and other android phones? Is this so that when you scroll through screens you will still be able to see the image? That was the only possible answer I could think of.
Thanks in advance.
Click to expand...
Click to collapse
Yes and yes.
You can root using SuperOneClick and still recieve OTA updates. You only lose that ability once you've installed a custom recovery.
Thanks!
DirkGently1 said:
Yes and yes.
You can root using SuperOneClick and still recieve OTA updates. You only lose that ability once you've installed a custom recovery.
Click to expand...
Click to collapse
Awesome! Thanks for the reply and details.
DirkGently1 said:
Yes and yes.
You can root using SuperOneClick and still recieve OTA updates. You only lose that ability once you've installed a custom recovery.
Click to expand...
Click to collapse
Having a custom recovery has NOTHING to do with your ROM's ability to receive OTA updates... it has to do with you ROM, not your recovery.
And, as mentioned, rooting or unlocking has no impact on you being able to receive OTA updates.
Sent from my Nexus One using XDA App
efrant said:
Having a custom recovery has NOTHING to do with your ROM's ability to receive OTA updates... it has to do with you ROM, not your recovery.
And, as mentioned, rooting or unlocking has no impact on you being able to receive OTA updates.
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
Sorry, but that is wrong.
http://forum.xda-developers.com/showpost.php?p=10871795&postcount=1
Read that post. There is a stock recovery supplied in case anybody wishes to recieve future OTA updates.
DirkGently1 said:
Sorry, but that is wrong.
http://forum.xda-developers.com/showpost.php?p=10871795&postcount=1
Read that post. There is a stock recovery supplied in case anybody wishes to recieve future OTA updates.
Click to expand...
Click to collapse
Uh, sorry, but NO. What he says in that post is incorrect.
I have been using a custom recovery since I first got my Nexus One, and I have received EVERY OTA update.
EDIT: But hey, don't take my word for it. Try it yourself.
efrant, for clarification, do the OTAs auto install, or do you have to manually flash them?
Sent from my Nexus One using XDA App
danger-rat said:
efrant, for clarification, do the OTAs auto install, or do you have to manually flash them?
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
So, in my setup (which is a rooted-but-otherwise-stock ROM and Amon_RA's 1.9.0 recovery), I receive OTA updates, and they auto-install with no problem (as Amon_RA's 1.9 recovery does not verify signatures). Note, however, that every OTA update also does two things: 1) it removes the permissions on the su binary (which obviously disables root access), and 2) it copies two files (/system/recovery-from-boot.p and /system/etc/install-recovery.sh) back onto the system partition, which will flash the stock recovery back to your devices as soon as you reboot. You will need to root first (either manually or by flashing ChainsDD su update before you reboot, or use SOC), then delete the two files, then reflash the custom recovery you want.
This is true only for Amon_Ra's 1.9 and later recoveries that either don't verify signatures at all, or allow turning verification off.
Jack_R1 said:
This is true only for Amon_Ra's 1.9 and later recoveries that either don't verify signatures at all, or allow turning verification off.
Click to expand...
Click to collapse
Yes, you are correct for the installation part of the update. However, you can have any recovery whatsoever, and it will not impact you receiving OTA update notifications.
efrant said:
Yes, you are correct for the installation part of the update. However, you can have any recovery whatsoever, and it will not impact you receiving OTA update notifications.
Click to expand...
Click to collapse
Yep, that's correct.
Cool
thanks for all the other responses to my question! I will look into this further when i have more time
Of course you can still 'receive' OTA but what's the point if you can't install them? I'm pretty sure that everybody understands the distinction!
DirkGently1 said:
Of course you can still 'receive' OTA but what's the point if you can't install them? I'm pretty sure that everybody understands the distinction!
Click to expand...
Click to collapse
If you read post 14, you will see that you CAN install them with a custom recovery...

T-Mobile phone issues 5.1

Hey guys,I need some help here. I am currently complete stock rooted and everything is working.
But when I flash another ROM, I cannot get any phone calls. I am being told that my phone rings and rings, or just goes straight to voicemail. I never once hear the phone ring,on a custom ROM.
I have updated all my firmware to the tee. I tried reflashing the radio, to see if that helps, but nothing. When I restored my stock nandroid, everything works. I am a crack flasher,so this is killing me!!
I have looked over APN settings, asked people in ROM threads, and I think I am the only one. I know I'll hear, you are doing something wrong, but I really am not. I clean flash everything. 5.0.x and 5.1 ROMs, all result in a lose of getting calls. Data works fine. Texting even works. Calling out works! But I can't get calls. Please help /;
Have you tried turning off enhanced LTE setting in "more>cell networks"?
Yes, I have tried all the tricks. Just can't get calls to work .
draymond1987 said:
Yes, I have tried all the tricks. Just can't get calls to work .
Click to expand...
Click to collapse
I had this problem also, easy fix.
Settings/more/cell network/access point names (APNs)..... click on T-Mobile GPRS, just click it to open the settings, the where is says apn protocol, change it to ip4, click the 3 dot menu, save, make sure its ticked..... might have to flip airplane mode on and off, I didn't.
Sent from my Nexus 6
I will give it a spot. I did this too, but still no calls, but I will load up a ROM. I know that Sykpos said it's a known issue.
draymond1987 said:
I will give it a spot. I did this too, but still no calls, but I will load up a ROM. I know that Sykpos said it's a known issue.
Click to expand...
Click to collapse
I have to do that for every rom I install. For some reason the apn is set to ip6, that is stock, but it wont connect. As soon as I set it to ip4, I have service, phone and data.
Sent from my Nexus 6
I had this problem too, it happens when you're using a 5.1 radio on a 5.0 rom, just flash the 5.0 radio, even if you're on the 5.1 bootloader.
New 5.1 update fixes this problem ( new radio )
https://www.androidfilehost.com/?fid=95916177934543135
All thanks to scrosler, just pointing in the right direction.
drtwrk127 said:
New 5.1 update fixes this problem ( new radio )
https://www.androidfilehost.com/?fid=95916177934543135
All thanks to scrosler, just pointing in the right direction.
Click to expand...
Click to collapse
Sorry for the huge delay. That did not help me /:
New radio,APN settings, everything. Only complete stock has calls working.
your issue has nothing to do with flashing the new radio. the rom you are using is based on aosp, and aosp is missing some lines of code that make you hear your speaker. flash the older radio again(not new radios), then flash this fix https://drive.google.com/file/d/0B-W-PFSvgML0Mm5NdHIyQjlPeXc/view?usp=sharing to listen to your phone when you make a call or receive calls.
Does that new E radio work with 5.0 roms and tmobile? You can receive calls and also hear them using the newest radio?
Okay guys, I can confirm that flashing a 5.0.x radio fixed my issues. I can get calls on 5.1 and on 5.0.x !
From what I have read, the radios (new) are causing issues on T-mobile.
http://forum.xda-developers.com/nexus-6/help/tmobile-5-1-update-questions-t3055584
draymond1987 said:
Okay guys, I can confirm that flashing a 5.0.x radio fixed my issues. I can get calls on 5.1 and on 5.0.x !
From what I have read, the radios (new) are causing issues on T-mobile.
http://forum.xda-developers.com/nexus-6/help/tmobile-5-1-update-questions-t3055584
Click to expand...
Click to collapse
yup, the radio itself is giving mamy tmobile users issues, as thats why i reflashed an older radio. if you have an issue with your 5.1 rom about hearing calls themselves (not getting calls, but hearing the person on the other line), then flash that zip i posted in the previous page.
simms22 said:
yup, the radio itself is giving mamy tmobile users issues, as thats why i reflashed an older radio. if you have an issue with your 5.1 rom about hearing calls themselves (not getting calls, but hearing the person on the other line), then flash that zip i posted in the previous page.
Click to expand...
Click to collapse
Many many thanks
So even the newest radio is still giving us TMO users issues? So I should NOT flash the new radio, but the new bootloader is OK?
kingston73 said:
So even the newest radio is still giving us TMO users issues? So I should NOT flash the new radio, but the new bootloader is OK?
Click to expand...
Click to collapse
shouldnt be an issue with the new bootloader, but im still using the older one as well. i dont flash cm, ever. so why do i need it? the old one works fine
I guess im just really confused about everything, is there any benefit to going to the 5.1 rom if we still need to keep the old 5.0 radio?
kingston73 said:
I guess im just really confused about everything, is there any benefit to going to the 5.1 rom if we still need to keep the old 5.0 radio?
Click to expand...
Click to collapse
sure. mamy bug fixes, and a few additions(like if your phone gwts stolen, then wiped, you can still disable it).

How many people took the 5.1.1 and are stuck with the "locked" bootloader

If you didn't know the 5.1.1 update comes with a "locked" bootloader (G920T) that does not allow you to flash custom recoveries. I would like to know what your status is if you don't mind because I think the more people who are stuck like me the more developers will say we need to come up with a fix for flashing custom recoveries issue.
The bootloader isn't locked. Twrp just needs to be updated. Won't happen til kernel source for 5.1.1 drops
Did we really need another thread about this?
Edit: Please explain how someone "accidentally" upgraded from rooted 5.0.2 to 5.1.1
mikeyinid said:
The bootloader isn't locked. Twrp just needs to be updated. Won't happen til kernel source for 5.1.1 drops
Click to expand...
Click to collapse
That is why I put "locked" in quotes and no I am not sure of that the phone blocks any custom recovery installed and I explained in another thread how cf-auto-root is just a recovery that is why it isn't working either.
se1000 said:
Did we really need another thread about this?
Edit: Please explain how someone "accidentally" upgraded from rooted 5.0.2 to 5.1.1
Click to expand...
Click to collapse
What I mean by that is if you had no knowledge of the changes in the bootloader and the fact you can't downgrade
ethanscooter said:
Accidently* wasn't really paying while typing and what I mean by that is if you had no knowledge of the changes in the bootloader and the fact you can't downgrade
Click to expand...
Click to collapse
So what you meant is, "If you downloaded a 1.3GB file and ODIN'ed back to stock just to upgrade and ignored the big bold warning that you couldn't downgrade" OR "If you downloaded a 1.3GB file and ODIN'ed to a new version of android that there was an active thread where it was CLEAR there was no root method"
"Accidentally"
ethanscooter said:
That is why I put "locked" in quotes and no I am not sure of that the phone blocks any custom recovery installed and I explained in another thread how cf-auto-root is just a recovery that is why it isn't working either.
Click to expand...
Click to collapse
You don't have to take my word for it. But I'm telling you, the bootloader is not locked.
se1000 said:
So what you meant is, "If you downloaded a 1.3GB file and ODIN'ed back to stock just to upgrade and ignored the big bold warning that you couldn't downgrade" OR "If you downloaded a 1.3GB file and ODIN'ed to a new version of android that there was an active thread where it was CLEAR there was no root method"
"Accidentally"
Click to expand...
Click to collapse
LOL some people did it look in the Q&A section people are posting things about recovery not being seandroid enabled because of the bootloader for me I was actually in a boot loop so I just downloaded the latest version from Sammobile
OH and sorry for the last typo I thought you were correcting me
mikeyinid said:
You don't have to take my word for it. But I'm telling you, the bootloader is not locked.
Click to expand...
Click to collapse
I understand it isn't locked but what I mean is for the time being it feels like it is locked considering we can't root or install a custom recovery or downgrade.
ethanscooter said:
LOL some people did it look in the Q&A section people are posting things about recovery not being seandroid enabled because of the bootloader for me I was actually in a boot loop so I just downloaded the latest version from Sammobile
OH and sorry for the last typo I thought you were correcting me
Click to expand...
Click to collapse
Of course people did it, but don't make it seem like you clicked one button and the upgrade went through and now you're stuck. You ACTIVELY went through the upgrade process to force it through.
Plus, you don't need THREE threads on the same subject.
se1000 said:
Of course people did it, but don't make it seem like you clicked one button and the upgrade went through and now you're stuck. You ACTIVELY went through the upgrade process to force it through.
Plus, you don't need THREE threads on the same subject.
Click to expand...
Click to collapse
I didn't make the 3 threads others did I just responded to all 3. Also the whole point of that one choice in the poll is for people who were expecting a normal tmobile update and didn't get what they thought they would usually tmobile let's you downgrade and you can flash a recovery right away but this time it was different and not a ton of people knew it was going to be different maybe I should've worded it better I am sorry.
ethanscooter said:
I didn't make the 3 threads others did I just responded to all 3. Also the whole point of that one choice in the poll is for people who were expecting a normal tmobile update and didn't get what they thought they would usually tmobile let's you downgrade and you can flash a recovery right away but this time it was different and not a ton of people knew it was going to be different maybe I should've worded it better I am sorry.
Click to expand...
Click to collapse
You have 2 threads in the QA section that are on this same subject.
Look, if you want to have a rooted, custom recovery, custom kernel device, don't be the first to update. That's just how things go.
From the Moderator
Redundant Thread ......... So........
..............THREAD CLOSED...........

Still waiting for Marshmallow...

I still haven't received the OTA and Marshmallow update, and am starting to wonder if something is wrong with my device.
I'm in England, my N6 is unlocked, my SIM is "3".
Is anyone else here still waiting for Marshmallow? Or can anyone offer any advice, please?
Unlocked and 100% stock?
danarama said:
Unlocked and 100% stock?
Click to expand...
Click to collapse
I'm sorry, I don't understand your response. The answer to my question was not mentioned in the opening posts of the thread I posted in, which is why I posted!! Are you saying I missed a thread? In which case my apologies, and I would be grateful to know which thread that is. Otherwise I don't understand what you're trying to tell me.
AidanBell said:
I'm sorry, I don't understand your response. The answer to my question was not mentioned in the opening posts of the thread I posted in, which is why I posted!! Are you saying I missed a thread? In which case my apologies, and I would be grateful to know which thread that is. Otherwise I don't understand what you're trying to tell me.
Click to expand...
Click to collapse
You said your phone was unlocked. I am asking if it is 100% stock? Stock means unmodified.
danarama said:
You said your phone was unlocked. I am asking if it is 100% stock? Stock means unmodified.
Click to expand...
Click to collapse
I do apologise. Your signature about XDA mantras was so huge that I actually missed your question above it!!
The answer is yes, it's 100% stock, unmodified. The only thing that may be pertinent is that I'm on the Marshmallow developers preview. I've had all three previews; numbers two and three came across over the air perfectly. There's just no sign now of the official build.
AidanBell said:
I do apologise. Your signature about XDA mantras was so huge that I actually missed your question above it!!
The answer is yes, it's 100% stock, unmodified. The only thing that may be pertinent is that I'm on the Marshmallow developers preview. I've had all three previews; numbers two and three came across over the air perfectly. There's just no sign now of the official build.
Click to expand...
Click to collapse
Preview doesn't get official build OTA's
You'll have to flash the stock system and boot.img of the official build
danarama said:
Preview doesn't get official build OTA's
You'll have to flash the stock system and boot.img of the official build
Click to expand...
Click to collapse
Oh, I never knew that. Thank you very much.
This is a pig for me, then, as I don't have much experience in flashing and was hoping very much not to have too. However, that appears to be my only option, therefore can anyone please point me in the direction of a step-by-step guide for flashing Marshmallow onto a Nexus 6 (including making sure I choose the right version in the first place!)?
AidanBell said:
This is a pig for me, then, as I don't have much experience in flashing and was hoping very much not to have too. However, that appears to be my only option, therefore can anyone please point me in the direction of a step-by-step guide for flashing Marshmallow onto a Nexus 6 (including making sure I choose the right version in the first place!)?
Click to expand...
Click to collapse
The same way you got the dev preview on there I guess.
See the first post at http://forum.xda-developers.com/nexus-6/general/guide-flash-factory-images-nexus-6shamu-t2954008 In step 5, use Method 2
AidanBell said:
This is a pig for me, then, as I don't have much experience in flashing and was hoping very much not to have too. However, that appears to be my only option, therefore can anyone please point me in the direction of a step-by-step guide for flashing Marshmallow onto a Nexus 6 (including making sure I choose the right version in the first place!)?
Click to expand...
Click to collapse
Did you actually buy your phone with M Preview?
AidanBell said:
This is a pig for me, then, as I don't have much experience in flashing and was hoping very much not to have too. However, that appears to be my only option, therefore can anyone please point me in the direction of a step-by-step guide for flashing Marshmallow onto a Nexus 6 (including making sure I choose the right version in the first place!)?
Click to expand...
Click to collapse
Just fastboot flash the system and boot images.
Go to Nexus 6 General > Sticky roll-up thread > adb and fastboot. What is it?
This will tell you how to set up fastboot and what it is (and how to use it.). Then flash the system.img and boot.img
AidanBell said:
I'm sorry, I don't understand your response. The answer to my question was not mentioned in the opening posts of the thread I posted in, which is why I posted!! Are you saying I missed a thread? In which case my apologies, and I would be grateful to know which thread that is. Otherwise I don't understand what you're trying to tell me.
Click to expand...
Click to collapse
Nah, that's his big sig, The message is one line, the sig is many lines and huge font
aiiee said:
Nah, that's his big sig, The message is one line, the sig is many lines and huge font
Click to expand...
Click to collapse
Huge for a good reason
danarama said:
Huge for a good reason
Click to expand...
Click to collapse
Many thanks for the help and comments, guys.
Yes, I bought the phone from the Phones Show Chat forum. So it was the previous owner who flashed the first preview build, not me.
I guess I have no choice, then, but to have a go at flashing the official build.
I'm not a complete newbie or an idiot, I'm confident that I can do it, but I would have preferred a step-by-step guide that doesn't presume any prior knowledge or experience. The one recommended by Jj14 still assumes a little too much for my liking. If I step a single foot off the correct path, I'll have no idea how to recover. If anyone can recommend another, safer, version I'd be most grateful.
AidanBell said:
I'm not a complete newbie or an idiot, I'm confident that I can do it, but I would have preferred a step-by-step guide that doesn't presume any prior knowledge or experience. The one recommended by Jj14 still assumes a little too much for my liking. If I step a single foot off the correct path, I'll have no idea how to recover. If anyone can recommend another, safer, version I'd be most grateful.
Click to expand...
Click to collapse
You can find the factory images here: https://developers.google.com/android/nexus/images?hl=en#shamu
There are the instructions how to flash it, but ignore the last step of locking the bootloader. If something goes wrong, and can't boot it, you can have a nice brick in your hands.
Save all your data! The flashing process will wipe it completely.
There's not magic needed, just fastboot. Turn your phone off, press down and power, until the "Fastboot flash mode" screen comes up. Then follow the instructions.
A couple of things explained:
1. The bootloader for the M preview and MRA58K were the same, but the MRA58N one might be new. I didn't try it.
2. if you unpack the "flash all" zip file, you can do the flashing by hand yourself, you can skip userdata if you don't want your device fully wiped, but then you must do a factory reset.
And if something is not clear, please feel free to ask anything. It's better to be sure than being modest and have a nice brick.
Edit: The bootloaders are the same bit for bit as the preview.
And the three official packages 58k, 58n, and 58r have the same radios.
58n is the security patch it is noted in the AOSP source too, and nobody knows what 58r is, but it can be for Verizon. But I'm not sure.
Continued thanks.
Still very nervous and somewhat out of my depth, but here goes nothing.
And ... fell at the first hurdle!
Can someone please tell me which version I need; "MRA58K", "MRA58N" or "MRA58R"?
Always the newest. MRA58K was the first Marshmallow factory image. MRA58N is the 1st November securty update, and so far nobody knows what 58R is. People are guessing here:
http://forum.xda-developers.com/nexus-6/help/mra58r-build-t3242328
I found this excellent step-by-step guide, and followed it carefully. Result ... I now have official Marshmallow.
http://www.digitaltrends.com/mobile/how-to-install-android-factory-image
So, I recommend that page to anyone else who, like me, needs a guiding hand. And I thank very much everyone in this thread for your help and encouragement.
Cheers,
Aidan
I'm stuck on LVY48I ( 5.1.1 )
don't know why it's too long to get the update !!
My Nexus totally stock.

Strange issue.

Hey guys! So this is a very strange issue. When I power off my nexus, a lot of times I have to wait a good 30 seconds or so before I can power it back on or go into the bootloader. If I power it off, and try to turn it back on fast, it stays black screen almost as of it's frozen or just not responding. I noticed this issue begun when I flashed the radio from N preview 2, and didn't happen before that. My question here, is what could this be? Can the radio really cause odd things like this to happen? Or is there another cause? I am running the newest Android version MOB30I, and have multirom installed with about 4 or so secondaries.
H4X0R46 said:
Hey guys! So this is a very strange issue. When I power off my nexus, a lot of times I have to wait a good 30 seconds or so before I can power it back on or go into the bootloader. If I power it off, and try to turn it back on fast, it stays black screen almost as of it's frozen or just not responding. I noticed this issue begun when I flashed the radio from N preview 2, and didn't happen before that. My question here, is what could this be? Can the radio really cause odd things like this to happen? Or is there another cause? I am running the newest Android version MOB30I, and have multirom installed with about 4 or so secondaries.
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You flashed Npreview radio on a marshmallow build?
Dead-neM said:
You flashed Npreview radio on a marshmallow build?
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Yes! Yes I did. Could this be an issue?
H4X0R46 said:
Yes! Yes I did. Could this be an issue?
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no. as im using the n preview radio on marshmallow, which is the same radio that came out with the last security update.
---------- Post added at 05:48 PM ---------- Previous post was at 05:46 PM ----------
H4X0R46 said:
Hey guys! So this is a very strange issue. When I power off my nexus, a lot of times I have to wait a good 30 seconds or so before I can power it back on or go into the bootloader. If I power it off, and try to turn it back on fast, it stays black screen almost as of it's frozen or just not responding. I noticed this issue begun when I flashed the radio from N preview 2, and didn't happen before that. My question here, is what could this be? Can the radio really cause odd things like this to happen? Or is there another cause? I am running the newest Android version MOB30I, and have multirom installed with about 4 or so secondaries.
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im going to guess, try a different kernel. as its the kernel that will boot up the device?
H4X0R46 said:
Yes! Yes I did. Could this be an issue?
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Yes it can. Why did you do that?
Make a backup (android or titatium backup)
Then reflash stock n6 firmware (erase data so put your backup and important files into pc)
Dead-neM said:
Yes it can. Why did you do that?
Make a backup (android or titatium backup)
Then reflash stock n6 firmware (erase data so put your backup and important files into pc)
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the N radio, is the same exact radio that google released for the may security patch. so the N radio, is the latest official radio for the nexus 6. so no, that wont be the problem.
simms22 said:
no. as im using the n preview radio on marshmallow, which is the same radio that came out with the last security update.
---------- Post added at 05:48 PM ---------- Previous post was at 05:46 PM ----------
im going to guess, try a different kernel. as its the kernel that will boot up the device?
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I wonder if it is. I'm using the newest Elite kernel for Marshmallow, it's always been my go to kernel. It's strange because after turning the device off, I can't turn it back on instantly, screen stays black as if it's not 100% shut down yet. I have to wait a bit before turning it back on, or entering the bootloader.
simms22 said:
im going to guess, try a different kernel. as its the kernel that will boot up the device?
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No, it's the bootloader that boots the device.
If he's hitting the power button and unable to get to the "Google" splash screen or the bootloader, the kernel is very irrelevant.
I'd be more curious if he's trying to use the bootloader from the N-Preview 2 with MM. Even though I think it's supposed to be backwards compatible, the bootloader is the only thing that would cause that sort of issue.
*technically* I'm pretty sure that you could format /boot (where the kernel is stored) and still get to your bootloader for fastboot and such. So, the kernel is really irrelevant until after the bootloader does it's thing.
*edit*
also, there's a reason that these are known as "Developer Previews" not "End-User Previews"... If you don't know how to fix weird issues that pop up like that, you should probably avoid them.
Yoinx said:
No, it's the bootloader that boots the device.
If he's hitting the power button and unable to get to the "Google" splash screen or the bootloader, the kernel is very irrelevant.
I'd be more curious if he's trying to use the bootloader from the N-Preview 2 with MM. Even though I think it's supposed to be backwards compatible, the bootloader is the only thing that would cause that sort of issue.
*technically* I'm pretty sure that you could format /boot (where the kernel is stored) and still get to your bootloader for fastboot and such. So, the kernel is really irrelevant until after the bootloader does it's thing.
*edit*
also, there's a reason that these are known as "Developer Previews" not "End-User Previews"... If you don't know how to fix weird issues that pop up like that, you should probably avoid them.
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Mmm yes after what said simms22 I've check the n preview and the bootloader is xxx.18 instead of last mm which is xxx.17 but a bootloader downgrade is risky right?
@H4X0R46 do you use the .sh file and update your bootloader and radio with n preview?
Dead-neM said:
Mmm yes after what said simms22 I've check the n preview and the bootloader is xxx.18 instead of last mm which is xxx.17 but a bootloader downgrade is risky right?
@H4X0R46 do you use the .sh file and update your bootloader and radio with n preview?
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It can be. Normally, once you upgrade, you just stick with the new one as they're backwards compatible normally. But, the ones for the Previews aren't always 100%. The whole reason these previews come out is so that developers can start making their apps compatible prior to the official release. Ideally, this is supposed to be done in emulators not necessarily real devices.
If the 30 second delay in powering back on is *that* big of a deal (to him) to risk bricking the phone by downgrading the bootloader and having something go wrong... I say go for it.
Yoinx said:
It can be. Normally, once you upgrade, you just stick with the new one as they're backwards compatible normally. But, the ones for the Previews aren't always 100%. The whole reason these previews come out is so that developers can start making their apps compatible prior to the official release. Ideally, this is supposed to be done in emulators not necessarily real devices.
If the 30 second delay in powering back on is *that* big of a deal (to him) to risk bricking the phone by downgrading the bootloader and having something go wrong... I say go for it.
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Is downgrading the bootloader really risky? I've done it before without issue and never knew this was risky! Are you supposed to just stay with the newest bootloader if you already flashed it? I always flash the bootloader for the image I'm flashing, even if I'm downgrading.
Dead-neM said:
Mmm yes after what said simms22 I've check the n preview and the bootloader is xxx.18 instead of last mm which is xxx.17 but a bootloader downgrade is risky right?
@H4X0R46 do you use the .sh file and update your bootloader and radio with n preview?
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I flash each partition manually.
H4X0R46 said:
Is downgrading the bootloader really risky? I've done it before without issue and never knew this was risky! Are you supposed to just stay with the newest bootloader if you already flashed it? I always flash the bootloader for the image I'm flashing, even if I'm downgrading.
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It's always risky when you're messing with essentially the lowest level software on the device. For instance, lets say that something happens while you're flashing the bootloader and it corrupts. What do you use to reflash it? You can't get to fastboot anymore...
As long as you know what you're doing, don't have corrupt images, and don't lose power or have lightning strike your computer while you're doing it, you would be fine.
The issue is that many/most people on XDA these days have no idea how to recover from problems or even what problems the things that they're doing might cause. So I tend to approach every situation under the assumption that the other poster may not have a full understanding.
No offense intended of course.
Yoinx said:
It's always risky when you're messing with essentially the lowest level software on the device. For instance, lets say that something happens while you're flashing the bootloader and it corrupts. What do you use to reflash it? You can't get to fastboot anymore...
As long as you know what you're doing, don't have corrupt images, and don't lose power or have lightning strike your computer while you're doing it, you would be fine.
The issue is that many/most people on XDA these days have no idea how to recover from problems or even what problems the things that they're doing might cause. So I tend to approach every situation under the assumption that the other poster may not have a full understanding.
No offense intended of course.
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Alright so that's just to be safe then? My laptop sometimes freezes solid out of the blue, uncommon but does happen, and I always thought "what if I'm flashing stuff?" Scary thought. ESPECIALLY the bootloader! So the danger you're referring to is flashing a bootloader in general, not so much downgrading? Like I said, I always match the bootloader to the version I'm running. This is okay?
EDIT: I ALWAYS ALWAYS ALWAYS check the MD5 checksum for EVERYTHING before flashing. Can never be too safe
H4X0R46 said:
Alright so that's just to be safe then? My laptop sometimes freezes solid out of the blue, uncommon but does happen, and I always thought "what if I'm flashing stuff?" Scary thought. ESPECIALLY the bootloader! So the danger you're referring to is flashing a bootloader in general, not so much downgrading? Like I said, I always match the bootloader to the version I'm running. This is okay?
EDIT: I ALWAYS ALWAYS ALWAYS check the MD5 checksum for EVERYTHING before flashing. Can never be too safe
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In general, the bootloader needs to match the highest version of android you intend to run. They're typically always backward compatible. On some phones, you can't downgrade the bootloader (at least not easily). This phone you should be fine doing so. However, there's not usually any reason to (backwards compatible afterall).
Yoinx said:
In general, the bootloader needs to match the highest version of android you intend to run. They're typically always backward compatible. On some phones, you can't downgrade the bootloader (at least not easily). This phone you should be fine doing so. However, there's not usually any reason to (backwards compatible afterall).
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Cool! Thanks for your input on that! Much appreciated! Yea I'm always wary of the bootloader because like you said, it IS the lowest software on the device. Quick question, if that were to get corrupted, does the device just not boot resulting in permanent brick? Or does it boot just no fastboot access? Might be a noob question, but why not ask lol
H4X0R46 said:
Cool! Thanks for your input on that! Much appreciated! Yea I'm always wary of the bootloader because like you said, it IS the lowest software on the device. Quick question, if that were to get corrupted, does the device just not boot resulting in permanent brick? Or does it boot just no fastboot access? Might be a noob question, but why not ask lol
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Depends, I've never really looked into unbricking this phone. Never had to yet.
Depending on the phone you can use tools like QHUSB and similar which let you reflash partitions just through the USB connection.
I know it's late but it could also be just the rom setup. I know a while ago there were commits that shut the device screen and buttons off before it was done shutting down (to make it appear faster) this made devices seem bricked for a short period. I don't know what ever happen to those commits, so I can't say for sure that it is them. But your issue fits perfectly.
So have I been flashing the bootloader wrong all along? I flashed in twrp a couple times but I try to flash them individually and wipe after flashing.
Sent from my Nexus 6 using XDA-Developers mobile app
Anybody able to find out why? I'm surprised to see I'm not the only one having this issue, it's annoying really.

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