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i recently bought a bell xperia z1, went on to the sony website to unlock bootloader to find that mine is locked, unlike the international version which has an unlockable bootloader.
ive updated it to see if the updates would unlock the bootloader but alas they did not, now im running :
model c6906
android 4.3
build 14.2.A.0.209
Main question :
Will i be able to downgrade and bypass the bootloader?
ive rooted a S2/Htc HD/ Desire Z in the past im just worrying about bricking my phone that ive had for less then a week.
and all other guides ive seen are for different versions, ive heard of flashing the 6903 stuff but that makes me worry way to much.
so pretty much want to know is it possible to do via downgrade to achieve root or should i just wait till a safer method becomes available.
sony bloatware is annoying
Yes, you can get C6906 Rooted with Locked Bootlader. First you have Read a bit more about it, starting with this thread and also watch the Video Tutorial.
You have to use Flashtool v0.9.15 to downgrade to .534 using Rogers FTF for your model from here.
When you are on 4.2.2 FW .534 Root it with Bin4ry Method, then Install Dualrecovery, SuperSU and Upgrade to your favorite latest Android Pre-Rooted, like KitKat Here or JB 4.3 Here.
Done.
Good Luck!
you sir are the man, followed the video and got root, now to find a rom to use.
edit : went to install a rom + gapps and had to do the whole process over again. right from flashing nuts custom. got stuck in a sony logo boot loop. zz
so attempt #2 with a different rom.
edit 2: was able to update to 4.4 kitkat so now i hope i can update my rom. since i was trying to do a 4.4 rom on the 4.3 firmware ?
edit3: nope stuck on sony logo so went back to nuts again... hrmm well atleast i could upate to 4.4 going to try boot to cwm and see if that works
Before I flashed mine I was reading for weeks, You did in few hours and I think to quickly. If the phone stuck in Boot logo, I think you did something wrong but I don't have the phone with me so I cannot tell.
Now you have to go back to stock, keep pushing Volume UP and Power, 3 vibrations, phone in off, keep pushing volume down and connect to pc in flashmode, flash a Stock FTF for your model from the link I give you. Now you phone should boot. Repeat the process to get Root and be careful.
Remember to Wipe Data, Appslog, Cache, every time you flash a Fresh Installation is recommended.
eclyptos said:
keep pushing volume down and connect to pc in flashmode, flash a Stock FTF for your model from the link I give you. .
Click to expand...
Click to collapse
You should not connect the phone to the PC until the PC prompts you after flashtool has prepared the files for flashing
sorvis said:
since i was trying to do a 4.4 rom on the 4.3 firmware ?
Click to expand...
Click to collapse
4.4 will need a 4.4 kernel.
gregbradley said:
You should not connect the phone to the PC until the PC prompts you after flashtool has prepared the files for flashing
Click to expand...
Click to collapse
Ok, that is why I saw in Flashtool Disconnect and Connect my device few times but never had a problem. Good to know.
i was able to go back and use flash tool to flash nut's ftf
so im on 4.4 kitkat rooted which is good.
but when i flash any custom rom trough any recovery it boot loops im guessing its because locked bootloader.
so im guessing any rom i want to flash has to have 2 parts. The flashing process in recovery and the flashtool flash firmware for that rom.
unless like you said update my kernal
Hello, I have upgraded to 5.0.2. via OTA a few days ago. My phone was RetEU .23, and the update notification that 5.0.2. became so annoying, so I decided to give it a shot. Lollipop is a disappointment for me, battery drain issues, lagging all over the menus, slow dialer, the phone was running better with KK installed, so I want to return back to 4.4.4.
Unfortunately there is no clear opinion whether this could be done, some say that when you have 5.0.2. bootloader installed with the OTA, you cannot go back, others say that it is no problem to do so. Really confusing.
Anyone tried to go back to 4.4.4. after getting the OTA? Could you please share how did you do so? Unlocking the bootloader and flashing one of the 4.4.4 stock ROMs from the General Section?
dub_1 said:
Hello, I have upgraded to 5.0.2. via OTA a few days ago. My phone was RetEU .23, and the update notification that 5.0.2. became so annoying, so I decided to give it a shot. Lollipop is a disappointment for me, battery drain issues, lagging all over the menus, slow dialer, the phone was running better with KK installed, so I want to return back to 4.4.4.
Unfortunately there is no clear opinion whether this could be done, some say that when you have 5.0.2. bootloader installed with the OTA, you cannot go back, others say that it is no problem to do so. Really confusing.
Anyone tried to go back to 4.4.4. after getting the OTA? Could you please share how did you do so? Unlocking the bootloader and flashing one of the 4.4.4 stock ROMs from the General Section?
Click to expand...
Click to collapse
Hello,
i actually switched from 5.0.2 back to KK 4.4.4 from Pizza_dox
when your bootloader is unlocked and you have TWRP installed
follow these instructions
1, go do a factory reset
2, go to advanced wipe and select :dalvik cache/system/data/internal storage/cache
when you did that there is no system on your phone so when you restart you will be going into an endless bootloop.
3, go press install and select the Microkat.zip file from Pizza_Dox
when that is done you have agian kitkat on your device
i think there some other methods but this is how i did it succesfully.
Also dont forget to make a backup because you will lose everything.
Gerriitw said:
Hello,
i actually switched from 5.0.2 back to KK 4.4.4 from Pizza_dox
when your bootloader is unlocked and you have TWRP installed
follow these instructions
1, go do a factory reset
2, go to advanced wipe and select :dalvik cache/system/data/internal storage/cache
when you did that there is no system on your phone so when you restart you will be going into an endless bootloop.
3, go press install and select the Microkat.zip file from Pizza_Dox
when that is done you have agian kitkat on your device
i think there some other methods but this is how i did it succesfully.
Also dont forget to make a backup because you will lose everything.
Click to expand...
Click to collapse
Thanks for your comment. I actually plan to go back to the stock 4.4.4. I have a basic idea of bootloader and things but not deep into this and have never done it before. From what I have read , I will have to:
1. First I need to unlock the bootloader, as per the instructions in the Moto website.
2. Then I will need to do a factory reset. (settings-secuirity-factory reset or some other way of doing this?)
3. Download 4.4.4 firmware + script.
4. Start up with Power+VolDown buttons and have bootloader menu on screen
5. Run the downloaded script from its .bat file.
6. Wait for some time for the flashing to end, then have stock 4.4.4
Please correct me if something is wrong or missed.
dub_1 said:
Thanks for your comment. I actually plan to go back to the stock 4.4.4. I have a basic idea of bootloader and things but not deep into this and have never done it before. From what I have read , I will have to:
1. First I need to unlock the bootloader, as per the instructions in the Moto website.
2. Then I will need to do a factory reset. (settings-secuirity-factory reset or some other way of doing this?)
3. Download 4.4.4 firmware + script.
4. Start up with Power+VolDown buttons and have bootloader menu on screen
5. Run the downloaded script from its .bat file.
6. Wait for some time for the flashing to end, then have stock 4.4.4
Please correct me if something is wrong or missed.
Click to expand...
Click to collapse
What i did...
Download the correct kk stock rom
Setup my drivers and mfastboot correctly (simple fast boot works too)
Unlocked bootloader. (Voids warranty coz gives bootloader status 3)
Reboot in bootloader now...
Flash all files of kitkat except gpt.bin and motoboot.bin (they never flash for me lol )
Flash all other files (i typed filenames manually)
Fastboot reboot
Ps - no matter what i do..i have not been able to lock my bootloader once i downgraded from 5.0.2 to 4.4.4
Locking bootloader works well on 5.0.2
doctor_droid said:
What i did...
Download the correct kk stock rom
Setup my drivers and mfastboot correctly (simple fast boot works too)
Unlocked bootloader. (Voids warranty coz gives bootloader status 3)
Reboot in bootloader now...
Flash all files of kitkat except gpt.bin and motoboot.bin (they never flash for me lol )
Flash all other files (i typed filenames manually)
Fastboot reboot
Ps - no matter what i do..i have not been able to lock my bootloader once i downgraded from 5.0.2 to 4.4.4
Locking bootloader works well on 5.0.2
Click to expand...
Click to collapse
well guess im gonna try - but no need to do, as makes no difference except to downgrading.... So best off unlocked
simply use the 4.4.4 link in my signature and pick firmware 2 or B called DSDSALL to go back to 4.4.4 .23 ret(xx)
So, it has been confirmed by several forums that when you have officially received the 5.0.2 OTA download update, you cannot go back to KK.
It has something to do with the new L bootloader. I guess that there is no way of doing this, up to now at least. Don't know if someone has tried and succeeded.
When you have flashed the 5.0.2. OTA however, you can have KK installed back, as most of the users on xda.
dub_1 said:
So, it has been confirmed by several forums that when you have officially received the 5.0.2 OTA download update, you cannot go back to KK. FALSE
It has something to do with the new L bootloader. I guess that there is no way of doing this, up to now at least. Don't know if someone has tried and succeeded. FALSE
When you have flashed the 5.0.2. OTA however, you can have KK installed back, as most of the users on xda.
Click to expand...
Click to collapse
YES you can install kitkat see my signature you NEED a unlocked boot loader
I have been up / down and sideways with ALL 4 versions ( 3 kitkat 1 Lollipop) of XT1068 firmware 50+ installs , a few soft bricks - also installed a few custom roms - gone back to lollipop and kitkat from these too.
see my signature for 4.4.4 and 5.0.2 firmware xt1068
reefuge said:
YES you can install kitkat see my signature you NEED a unlocked boot loader
I have been up / down and sideways with ALL 4 versions ( 3 kitkat 1 Lollipop) of XT1068 firmware 50+ installs , a few soft bricks - also installed a few custom roms - gone back to lollipop and kitkat from these too.
see my signature for 4.4.4 and 5.0.2 firmware xt1068
Click to expand...
Click to collapse
Cheers mate. Already installed stock 4.4.4.
Does it make sense to relock the bootloader?
dub_1 said:
Cheers mate. Already installed stock 4.4.4.
Does it make sense to relock the bootloader?
Click to expand...
Click to collapse
no absolutely not....... boot logo warning still comes up ...warranty still void and strangely if been to 5.0.2 and back to 4.4.4 it wont relock
but you can relock if on 5.0.2
Successful downgrade from 5.0.2 to 4.4.4
Dear All,
Pls help me in downgrading from 5.0.2 to 4.4.4 on my XT1068 Dual Sim Indian Version.
I need to know whether we can return to 4.4.4 without unlocking bootloader and is rooting needed.
Pls let me know your experience in a noob friendly way.
TIA... :angel:
dub_1 said:
Cheers mate. Already installed stock 4.4.4.
Does it make sense to relock the bootloader?
Click to expand...
Click to collapse
What exactly did you do? His signature is gone...
i was going to try to root my 3 weeks z3 compact, but the root only worked on kitkat 4.4, and i was with lollipop, so i flashed a 4.4 rom to downgrade it, and the device, got bricked.... i already tried flashing custom roms, but never with sucess...
i would be glad if someone could help me....
rubengamerpt said:
i was going to try to root my 3 weeks z3 compact, but the root only worked on kitkat 4.4, and i was with lollipop, so i flashed a 4.4 rom to downgrade it, and the device, got bricked.... i already tried flashing custom roms, but never with sucess...
i would be glad if someone could help me....
Click to expand...
Click to collapse
What does the device do? Which phone u have?what rom did u flash? Tried flash a lp or kk tft via flashtool?
basti2909 said:
What does the device do? Which phone u have?what rom did u flash? Tried flash a lp or kk tft via flashtool?
Click to expand...
Click to collapse
my device is a z3 compact, i flashed a kit kat rom, wich was on this thread:
http://forum.xda-developers.com/z3-compact/general/how-to-root-backup-drm-keys-t3013343
anyway, i got the device working after flashing a uk stock rom lol, ty for trying to help
I was just wondering if i can go back from stock ota updated 5.0.2 to 4.4 kitkat with my twrp backup without problems ?
You can downgrade to 4.4.4 without issues. But I never tested such thing using TWRP backup, but, as far as I know, KitKat bootloader is different of Lollipop, so you may brick some files in your Titan. If you really want to downgrade, do it properly, by downloading DSDALL firmware and then, using fastboot to order the commands. If you want to automate downgrade process, you can use my tool that you can take a look here. You still need to download the stock ROM apart, tough. xD
Ok thank you very much. Guess I'll have to use titanium backup and fastboot then. Will definitely check your tool
thepekic said:
Ok thank you very much. Guess I'll have to use titanium backup and fastboot then. Will definitely check your tool
Click to expand...
Click to collapse
No problem. Glad I helped
No you can easily downgrade using twrp.. Just wipe system cache data and dalvik cache and restore the system, data and boot of your kk backup.. You should be good to go
Flashing the firmware will surely brick your device
Sent from my Moto G 2014 using Tapatalk
Ok thanks a lot thats great to hear will do it this way then . So basically i can have KK roms on Lollipop bootloader but not vice versa ( except stock based )and i cant downgrade the bootloader right ?
thepekic said:
Ok thanks a lot thats great to hear will do it this way then . So basically i can have KK roms on Lollipop bootloader but not vice versa ( except stock based )and i cant downgrade the bootloader right ?
Click to expand...
Click to collapse
You cant downgrade your bootloader, and yes you cant use custom 5.1 roms with kk bootloader But anyways, your bootloader is already upgraded, so it doesnt matter. And be careful about one thing, don't directly flash a STOCK kk rom on a lollipop 5.1 rom. Always downgrade to a stock based rom, and then do it.. CM11 based roms can be flashed directly (with wipes of course)
Vidhanth said:
You cant downgrade your bootloader, and yes you cant use custom 5.1 roms with kk bootloader But anyways, your bootloader is already upgraded, so it doesnt matter. And be careful about one thing, don't directly flash a STOCK kk rom on a lollipop 5.1 rom. Always downgrade to a stock based rom, and then do it.. CM11 based roms can be flashed directly (with wipes of course)
Click to expand...
Click to collapse
Thanks. Sorry because i was a bit unclear, the thing is i didn't update to lollipop yet and wanted to do it via ota. So I'm still on stock 4.4. But i saw your RaR rom and i think i will just flash that. I'm really sorry to ask again and waste your time but will i be able to flash other non-stock based lollipop roms then ? (just for fun of course because i think i will be using RaR as my daily )
thepekic said:
Thanks. Sorry because i was a bit unclear, the thing is i didn't update to lollipop yet and wanted to do it via ota. So I'm still on stock 4.4. But i saw your RaR rom and i think i will just flash that. I'm really sorry to ask again and waste your time but will i be able to flash other non-stock based lollipop roms then ? (just for fun of course because i think i will be using RaR as my daily )
Click to expand...
Click to collapse
I highly recommend you do the ota update before flashing any ROMs, because it will update your bootloader, and avoid issues After you get your BL updated, you can freely flash any ROM of your choice, just make sure you do a clean flash
And no you are not wasting my time
Sent from my Moto G 2014 using Tapatalk
Vidhanth said:
I highly recommend you do the ota update before flashing any ROMs, because it will update your bootloader, and avoid issues After you get your BL updated, you can freely flash any ROM of your choice, just make sure you do a clean flash
And no you are not wasting my time
Sent from my Moto G 2014 using Tapatalk
Click to expand...
Click to collapse
Ok done thanks so much man !
Sent from my XT1068 using XDA Free mobile app
Can anyone pls tel how do i downgrade from marshmallow 6.0.1 to lollipop 5.0.2?
Currently my bootloader version is 48.83. I dnt remember what it was on lollipop. Pls help!
Just use your backup that you made prior to upgrading to Marshmallow. If you don't have the backup, just flash a different ROM. Plenty of guides on the site.
spetrie said:
Just use your backup that you made prior to upgrading to Marshmallow. If you don't have the backup, just flash a different ROM. Plenty of guides on the site.
Click to expand...
Click to collapse
I have made the backup. But i have heard about many people hard bricking the phone when trying to downgrade and then again upgrading via ota. Thats why i askd.
If u are on custom rom other than motorola marshmallow soak test ota.. you will not get ur phone bricked when downgrading. Hard brick occurs if u downgrad from soak test ota to lollipop. In your case u just need to flash retaildsdsall firmware via fastboot mood. Search for tutorials for reverting to stoc 5.0.2.
Just DON'T CHANGE BOOTLOADER. You shouldn't be able to downgrade bootloaders but Motorola screwed that and with M bootloader you "can" downgrade, but bootloader downgrade results in BRICK. Just flash the rom you want, EXCEPT THE BOOTLOADER. For custom roms you shouldn't have problems.
gauravrai said:
If u are on custom rom other than motorola marshmallow soak test ota.. you will not get ur phone bricked when downgrading. Hard brick occurs if u downgrad from soak test ota to lollipop. In your case u just need to flash retaildsdsall firmware via fastboot mood. Search for tutorials for reverting to stoc 5.0.2.
Click to expand...
Click to collapse
I have made a nandroid backup. Currently m on nexus experience rom. One of my friend was in resurrection remix (marshmallow) he faced some bugs so he came back to lollipop. It worked fine for him. But when he tried to flash the soak test ota, he hard bricked his phone... Why did that happen??
rcoacci said:
Just DON'T CHANGE BOOTLOADER. You shouldn't be able to downgrade bootloaders but Motorola screwed that and with M bootloader you "can" downgrade, but bootloader downgrade results in BRICK. Just flash the rom you want, EXCEPT THE BOOTLOADER. For custom roms you shouldn't have problems.
Click to expand...
Click to collapse
Currently my bootloader versuon is 48.83
What is the version on lollipop? Bootloader dsnt change on flashing roms ryt?
sumedhs said:
I have made the backup. But i have heard about many people hard bricking the phone when trying to downgrade and then again upgrading via ota. Thats why i askd.
Click to expand...
Click to collapse
All I can say is that I was on Nexus Experience 10.0.4 (Marshmallow) but could not get adopted storage to work so restored my previous AOSP lollipop ROM from TWRP backup and no issues. My Bootloader is 48.82. I have never used the soak test version or OTA version of marshmallow.
I have also in the past restored stock lollipop V5.0.2 from other lollipop versions with no issues.
rcoacci said:
Just DON'T CHANGE BOOTLOADER. You shouldn't be able to downgrade bootloaders but Motorola screwed that and with M bootloader you "can" downgrade, but bootloader downgrade results in BRICK. Just flash the rom you want, EXCEPT THE BOOTLOADER. For custom roms you shouldn't have problems.
Click to expand...
Click to collapse
which files or command to skip in this process
if u use L ROM then this one is the latest or last update of L ROM and i have used many days.........and its good.....its CM based LINK or If u like a pure Stock L ROM with Optimized then here it goes LINK
ezio1723 said:
which files or command to skip in this process
Click to expand...
Click to collapse
Same question here as well. Which command flashes the bootloader, so that I can skip them
rebzin said:
Same question here as well. Which command flashes the bootloader, so that I can skip them
Click to expand...
Click to collapse
you can use easyinstaller file it will automatically flashes the files
My bootloader is 0×4887 I am running a stock mm and I wud like to downgrade to lollipop to use the stellar kernel way shud I do...???pls help
Just a noobie....
Sry if tat was bad English..!!
Just don't downgrade your Bootloader and you should be fine, if you're using an easyinstaller script to flash stock Lollipop make sure and remove the lines of code that flash motoboot.img & I'd also recommend removing the line that flashes gpt.bin to be safe.