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Can any one help me to restore my XT907 back to stock JB 4.1.2 from the stock kitkat 4.4.2 update?
My current System version is: 183.46.10.XT907.Veryzon.en.US
Android Version: 4.4.2
Baseband Version: SM_BP_101031.042.32.86P
Kernal Version: 3.4.42-g5170b6b
[email protected] #1
Fri May 2 00:30:06 PDT 2014
Build Number: KDA20.62-10.1
Build Date: Fri May 2 00:20:25 PDT 2014
Please help me.. Thanks in advance...
Wouldn't recommend you try it on a locked bootloader.
Those that are unlocked shouldn't have any issues.
Technically, with a locked bootloader, if Fastboot will allow you to downgrade, then it should be possible.
You'd have to boot into Fastboot, then run the command:
fastboot flash system system.img
Where system.img is the 4.1.2 image file extracted from the fxz file. If it won't let you do this, then downgrade isn't possible. It will likely say failed flash and you'll have to flash something to kick the phone out of fastboot like logo.img.
You could also try RSDLite and try to flash the 4.1.2 fxz, but I doubt that will work because bootloader and such are not downgradeable and it will likely fail.
GnatGoSplat said:
Technically, with a locked bootloader, if Fastboot will allow you to downgrade, then it should be possible.
You'd have to boot into Fastboot, then run the command:
fastboot flash system system.img
Where system.img is the 4.1.2 image file extracted from the fxz file. If it won't let you do this, then downgrade isn't possible. It will likely say failed flash and you'll have to flash something to kick the phone out of fastboot like logo.img.
You could also try RSDLite and try to flash the 4.1.2 fxz, but I doubt that will work because bootloader and such are not downgradeable and it will likely fail.
Click to expand...
Click to collapse
Thanks for ur reply..
My bootloader is locked. I want to try downgrade to stock 4.1.2. Can u please send me the link to download stock 4.1.2 img and exact steps to downgrade?
Thnaks so much in advance..
kulsforu said:
Thanks for ur reply..
My bootloader is locked. I want to try downgrade to stock 4.1.2. Can u please send me the link to download stock 4.1.2 img and exact steps to downgrade?
Thnaks so much in advance..
Click to expand...
Click to collapse
You can get them here:
http://sbf.droid-developers.org/phone.php?device=8
You can extract the original system.img from the archive as well as logo.img in case the phone doesn't allow you to flash system.img, you can use logo.img to kick the phone out of Fastboot. You will need to install Motorola ADB drivers on your computer in advance, and also need a fastboot.exe file which I think you can find via Google, but if you have ever rooted your phone in the past, usually that also came with fastboot.
Anyway, get into fastboot mode by turning off the phone, then holding down all 3 buttons. Use vol- to select Fastboot and vol+ to choose it. Phone should boot into fastboot.
Connect to PC and issue command:
fastboot flash system system.img
If it works, the phone should be downgraded. If it says flash failed, then downgrade isn't possible. In that case, if the phone is stuck in fastboot mode and can't be rebooted, issue this command to get out of fastboot.
fastboot flash logo logo.img
That should let it reboot as normal.
I actually doubt it's possible to downgrade, but I haven't tried it myself so I can't say for sure.
GnatGoSplat said:
You can get them here:
http://sbf.droid-developers.org/phone.php?device=8
You can extract the original system.img from the archive as well as logo.img in case the phone doesn't allow you to flash system.img, you can use logo.img to kick the phone out of Fastboot. You will need to install Motorola ADB drivers on your computer in advance, and also need a fastboot.exe file which I think you can find via Google, but if you have ever rooted your phone in the past, usually that also came with fastboot.
Anyway, get into fastboot mode by turning off the phone, then holding down all 3 buttons. Use vol- to select Fastboot and vol+ to choose it. Phone should boot into fastboot.
Connect to PC and issue command:
fastboot flash system system.img
If it works, the phone should be downgraded. If it says flash failed, then downgrade isn't possible. In that case, if the phone is stuck in fastboot mode and can't be rebooted, issue this command to get out of fastboot.
fastboot flash logo logo.img
That should let it reboot as normal.
I actually doubt it's possible to downgrade, but I haven't tried it myself so I can't say for sure.
Click to expand...
Click to collapse
Thank u so much my friend, I need to clear that I m using this phone in India with Reliance CDMA network. If downgrade will succeed then will it in verizon locked condition or it will remain unlocked for global use? Also I need to add that I have never unlocked my bootloader or rooted my phone.
kulsforu said:
Thank u so much my friend, I need to clear that I m using this phone in India with Reliance CDMA network. If downgrade will succeed then will it in verizon locked condition or it will remain unlocked for global use? Also I need to add that I have never unlocked my bootloader or rooted my phone.
Click to expand...
Click to collapse
I think it would stay unlocked since you wouldn't be reflashing the radio.
It is easy enough to re-unlock if that should get reversed, however.
Ah, nevermind. Don't bother to try it. Even if you could succeed, you'd end up with black screen after the logo. The newer bootloaders will not allow Jellybean to boot. There is no way to downgrade. KitKat is a one way road with a locked BL. Sorry!
GnatGoSplat said:
Ah, nevermind. Don't bother to try it. Even if you could succeed, you'd end up with black screen after the logo. The newer bootloaders will not allow Jellybean to boot. There is no way to downgrade. KitKat is a one way road with a locked BL. Sorry!
Click to expand...
Click to collapse
:crying::crying::crying::crying::crying:
Sorry for the bad news. I'm in the same boat now too. Thought I would experiment with ways to preserve root, and long story short, now I'm stuck on an unrooted phone on stock KK with locked BL.
Why do you want to downgrade? If it's to be rooted, sorry, no solution for that. If there is some other issue, maybe there is a solution for that specific issue.
GnatGoSplat said:
Sorry for the bad news. I'm in the same boat now too. Thought I would experiment with ways to preserve root, and long story short, now I'm stuck on an unrooted phone on stock KK with locked BL.
Why do you want to downgrade? If it's to be rooted, sorry, no solution for that. If there is some other issue, maybe there is a solution for that specific issue.
Click to expand...
Click to collapse
The issue is my CDMA data is not working after upgrade to kitkat. I m from India and using Reliance CDMA sim. Before update, everything was working perfect. But now only data(EVDO or 1x) is not working. GSM data(3G & 2G) is working.
Please help if u have any solution for this issue.
GnatGoSplat said:
You can get them here:
http://sbf.droid-developers.org/phone.php?device=8
You can extract the original system.img from the archive as well as logo.img in case the phone doesn't allow you to flash system.img, you can use logo.img to kick the phone out of Fastboot. You will need to install Motorola ADB drivers on your computer in advance, and also need a fastboot.exe file which I think you can find via Google, but if you have ever rooted your phone in the past, usually that also came with fastboot.
Anyway, get into fastboot mode by turning off the phone, then holding down all 3 buttons. Use vol- to select Fastboot and vol+ to choose it. Phone should boot into fastboot.
Connect to PC and issue command:
fastboot flash system system.img
If it works, the phone should be downgraded. If it says flash failed, then downgrade isn't possible. In that case, if the phone is stuck in fastboot mode and can't be rebooted, issue this command to get out of fastboot.
fastboot flash logo logo.img
That should let it reboot as normal.
I actually doubt it's possible to downgrade, but I haven't tried it myself so I can't say for sure.
Click to expand...
Click to collapse
I'm also on official KK with locked bootloader, Can i flash kk modified system.img via this method ?
Prohyper said:
I'm also on official KK with locked bootloader, Can i flash kk modified system.img via this method ?
Click to expand...
Click to collapse
Sorry, with locked BL, you can't flash modified system.img or older system.img. I tried it just to make sure, and the phone wouldn't allow it.
GnatGoSplat said:
Sorry for the bad news. I'm in the same boat now too. Thought I would experiment with ways to preserve root, and long story short, now I'm stuck on an unrooted phone on stock KK with locked BL.
Why do you want to downgrade? If it's to be rooted, sorry, no solution for that. If there is some other issue, maybe there is a solution for that specific issue.
Click to expand...
Click to collapse
The issue is my CDMA data is not working after upgrade to kitkat. I m from India and using Reliance CDMA sim. Before update, everything was working perfect. But now only data(EVDO or 1x) is not working. GSM data(3G & 2G) is working.
Please help if u have any solution for this issue.
kulsforu said:
The issue is my CDMA data is not working after upgrade to kitkat. I m from India and using Reliance CDMA sim. Before update, everything was working perfect. But now only data(EVDO or 1x) is not working. GSM data(3G & 2G) is working.
Please help if u have any solution for this issue.
Click to expand...
Click to collapse
Good news is that major developments happened a month ago. :good:
You can now root AND unlock bootloader on KitKat. I think you can find the info you need in this thread:
http://forum.xda-developers.com/showthread.php?t=2783806
Once you have bootloader unlocked, you can downgrade back to JB. I have tried it and can confirm it works.
Good luck!
GnatGoSplat said:
Good news is that major developments happened a month ago. :good:
You can now root AND unlock bootloader on KitKat. I think you can find the info you need in this thread:
http://forum.xda-developers.com/showthread.php?t=2783806
Once you have bootloader unlocked, you can downgrade back to JB. I have tried it and can confirm it works.
Good luck!
Click to expand...
Click to collapse
Thanks much for update..
I can not getting the method. Actually I m new with these things.
Can you please explain how to use tr.apk?
Thanks in Advance..
kulsforu said:
Thanks much for update..
I can not getting the method. Actually I m new with these things.
Can you please explain how to use tr.apk?
Thanks in Advance..
Click to expand...
Click to collapse
You just run it and let it do its thing. Your phone should be rooted once it has rebooted. You can verify with any rootchecker app.
Then install and run Motopocalypse.apk to unlock your bootloader.
You can the use RSDLite to flash back to JellyBean using the JB fxz file. You will need to edit the xml file in the fxz file, removing the lines with gpt.bin and tz.mbn.
GnatGoSplat said:
You just run it and let it do its thing. Your phone should be rooted once it has rebooted. You can verify with any rootchecker app.
Then install and run Motopocalypse.apk to unlock your bootloader.
You can the use RSDLite to flash back to JellyBean using the JB fxz file. You will need to edit the xml file in the fxz file, removing the lines with gpt.bin and tz.mbn.
Click to expand...
Click to collapse
Thanks.. I m getting you.. But I m not using verizon network. My Razr M is unlocked for both CDMA and GSM carrier. I m using my Razr M in India and both CDMA and GSM are working at present. only DATA in CDMA is not working.
My question is will it be remain unlocked for both CDMA and GSM career in India after flashing back stock JELLY BEAN?
Thanks in Advance..
kulsforu said:
My question is will it be remain unlocked for both CDMA and GSM career in India after flashing back stock JELLY BEAN?
Click to expand...
Click to collapse
I believe so, yes.
GnatGoSplat said:
I believe so, yes.
Click to expand...
Click to collapse
Thanks.
Can you please send link to download JB 4.1.2 fxz file. and step by step instruction to flash the file.?
Hi guys,
i'm stucking in a not good situation with my OnePlus 2. Maybe someone here can help me..
In this moment i have my phone without access to recovery, but working fastboot.
That problem happened after flashing the Phoenix Rom. I have the bootloader locked, from fastboot i can't do anything. ( flash recovery, flash boot.img etc). No rom working, i can't enabling the possibility to unlock the bootloader..
I already tried with the Hard Brick tricks, but my laptop did not recognize the Qualcomm devices.
somebody can help me?
i will offer you a beer
Thanks!
colol said:
Hi guys,
i'm stucking in a not good situation with my OnePlus 2. Maybe someone here can help me..
In this moment i have my phone without access to recovery, but working fastboot.
That problem happened after flashing the Phoenix Rom. I have the bootloader locked, from fastboot i can't do anything. ( flash recovery, flash boot.img etc). No rom working, i can't enabling the possibility to unlock the bootloader..
I already tried with the Hard Brick tricks, but my laptop did not recognize the Qualcomm devices.
somebody can help me?
i will offer you a beer
Thanks!
Click to expand...
Click to collapse
How did you managed to flash the ROM since your bootloader is locked, which means no custom recovery installed ?
Does
Code:
fastboot boot recovery.img
works ? (BOOT, not FLASH)
casual_kikoo said:
How did you managed to flash the ROM since your bootloader is locked, which means no custom recovery installed ?
Does
Code:
fastboot boot recovery.img
works ? (BOOT, not FLASH)
Click to expand...
Click to collapse
Hi casual_kikoo,
thanks for reply!
I tried to do fastboot boot recovery.img, but not worked. No customer recovery.
I fixed it, following this guide. ( after a lot of windows's driver problems )
http://forum.xda-developers.com/oneplus-2/general/guide-official-stock-reset-to-oos-2-2-0-t3290707
Thanks so much for the help!
Cheers,
Hi guyz, i've a little problem here.
I've to Lock my bootloader. Now i did it several times, with different tools too. Now:
If i use correct droidboot version (lollipop one) and flash it, the bootloader is not (secure), so not locked.
But if i try with a tool and it flashes the KK fastboot, it works, it's relocked.
Can you tell me why? Thanks!
steakhutzeee said:
Hi guyz, i've a little problem here.
I've to Lock my bootloader. Now i did it several times, with different tools too. Now:
If i use correct droidboot version (lollipop one) and flash it, the bootloader is not (secure), so not locked.
But if i try with a tool and it flashes the KK fastboot, it works, it's relocked.
Can you tell me why? Thanks!
Click to expand...
Click to collapse
Seems the Lollipop fastboot doesn't have the signature check that kitkat fastboot has.
But, even you can flash custom files with locked bootloader and lollipop fastboot, the system don't boot, stucks at USB logo, so it means the bootloader is locked.
leonardohenrique10 said:
Seems the Lollipop fastboot doesn't have the signature check that kitkat fastboot has.
But, even you can flash custom files with locked bootloader and lollipop fastboot, the system don't boot, stucks at USB logo, so it means the bootloader is locked.
Click to expand...
Click to collapse
Thanks! You sure about this? I've to return the phone to amazon, and i would to be sure of this :silly:
steakhutzeee said:
Thanks! You sure about this? I've to return the phone to amazon, and i would to be sure of this :silly:
Click to expand...
Click to collapse
Yes, I tested in my phone, flashed custom kernel with locked bootloader and fastboot from Lollipop .87, flash sucessfully, but when I try to boot... USB logo.
Only KitKat fastboot has signature check.
leonardohenrique10 said:
Yes, I tested in my phone, flashed custom kernel with locked bootloader and fastboot from Lollipop .87, flash sucessfully, but when I try to boot... USB logo.
Only KitKat fastboot has signature check.
Click to expand...
Click to collapse
Ok, thank you
In fastboot (lollipop) i've an (?) next to signature and other values i don't remeber. You too?
steakhutzeee said:
Ok, thank you
In fastboot (lollipop) i've an (?) next to signature and other values i don't remeber. You too?
Click to expand...
Click to collapse
Yes, same on my device. I think it's normal.
Yes, fastboot mode of lollipop firmware on ZenFone 5 / 6 is able to flash custom kernel / recovery, but it won't boot until bootloader unlocked.
Hi all,
I am trying to re-lock my bootloader, but my fastboot commands aren't working. It says "remote error command not found."
I am running stock b19 (7.1.1) unrooted. The only thing modified is the bootloader, which is unlocked.
How do I fix this error. I installed the ADB drivers. I do not know what is causing this error. Any help will be appreciated.
TheWoerbler said:
Hi all,
I am trying to re-lock my bootloader, but my fastboot commands aren't working. It says "remote error command not found."
I am running stock b19 (7.1.1) unrooted. The only thing modified is the bootloader, which is unlocked.
How do I fix this error. I installed the ADB drivers. I do not know what is causing this error. Any help will be appreciated.
Click to expand...
Click to collapse
I think fastboot commands were disabled in b19. There's no harm in keeping it unlocked unless you're wanting to use Android Pay (in which case Magisk can hide the unlocked bootloader), or you're needing to return the phone for warranty reasons.
bluestudy said:
I think fastboot commands were disabled in b19. There's no harm in keeping it unlocked unless you're wanting to use Android Pay (in which case Magisk can hide the unlocked bootloader), or you're needing to return the phone for warranty reasons.
Click to expand...
Click to collapse
So I installed the factory image from ZTE's website, which uninstalled twrp and SuperSU (which I knew it would), but I am still unable to use fastboot commands. What might be causing this problem?
As far as I know you need to rollback and flash DrakenFX's fastboot command zip in order to be able to use fastboot again.
iNaruX said:
As far as I know you need to rollback and flash DrakenFX's fastboot command zip in order to be able to use fastboot again.
Click to expand...
Click to collapse
So I changed some settings in Windows Device Manager, now fastboot is working...kinda. I type "fastboot oem lock" and it hangs up for 5 seconds and gives me the error "FAILED (command write failed (Unknown error))...
I solve one problem, and another pops up... Thoughts?
EDIT: In regards to DrakenFX's fastboot command zip, where would I get that? Is it the full systemstock?
I read this guide for the Axon7 A2017G, but the zips used are for the A2017U.
https://forum.xda-developers.com/axon-7/how-to/guide-reinstall-twrp-root-update-to-t3578552
The first couple of steps restore the bootloader and get fastboot commands up and running via EDL mode.
iNaruX said:
I read this guide for the Axon7 A2017G, but the zips used are for the A2017U.
https://forum.xda-developers.com/axon-7/how-to/guide-reinstall-twrp-root-update-to-t3578552
The first couple of steps restore the bootloader and get fastboot commands up and running via EDL mode.
Click to expand...
Click to collapse
I am currently running B29 (6.0.1). Will this still work, even though I am on a different version of Android? Or should I update to B19?
Oh...if you are on MM this should work for you.
https://forum.xda-developers.com/axon-7/how-to/guide-how-to-unlock-bootloader-stay-t3461165
Just flashable zip in Recovery, no need for EDL.
I'm not an A2017U though...
iNaruX said:
Oh...if you are on MM this should work for you.
https://forum.xda-developers.com/axon-7/how-to/guide-how-to-unlock-bootloader-stay-t3461165
Just flashable zip in Recovery, no need for EDL.
I'm not an A2017U though...
Click to expand...
Click to collapse
Just for clarification: I am trying to LOCK my bootloader, not UNLOCK. Sorry if I've been unclear. I need to RE-LOCK my bootloader...everything else is stock (recovery, no SuperSU, etc.)
P.S. Thank you for your help, I really appreciate you taking the time.\
EDIT: AHHHHHHHHHHHHH I GOT IT!!!!! Thank you so so much!!! I really appreciate your help, you have no idea!! I followed the last guide you sent me and replaced "unlock" with "lock." You're the best, man...or woman!
TheWoerbler said:
Just for clarification: I am trying to LOCK my bootloader, not UNLOCK. Sorry if I've been unclear. I need to RE-LOCK my bootloader...everything else is stock (recovery, no SuperSU, etc.)
P.S. Thank you for your help, I really appreciate you taking the time.\
EDIT: AHHHHHHHHHHHHH I GOT IT!!!!! Thank you so so much!!! I really appreciate your help, you have no idea!! I followed the last guide you sent me and replaced "unlock" with "lock." You're the best, man...or woman!
Click to expand...
Click to collapse
Haha cheers, I think you got it, I sent that guide just to enable fastboot commands, glad it worked :good:
I need to re-lock the bootloader on my A2017U. I put in a warranty repair claim with ZTE for a dead SIM2 slot. They said if I could relock it to stock, they would not charge the $79.99 out-of-warranty fee.
My only concern with the guides above is that I'm on the RR Nougat ROM. Will any of the links above work for me?
Hi Guys,
The Axon 7 Model A2017U I just purchased has the bootloader locked and it is running LineageOS 14.1 - 2018032-Nightly-axon7. I need to relock the bootloader and get back to the stock MiFavor rom so that I can send the phone to ZTE for repair. Can you please explain to a newb in some detail how to achieve that.
Thank you.
TheBoozer said:
Hi Guys,
The Axon 7 Model A2017U I just purchased has the bootloader locked and it is running LineageOS 14.1 - 2018032-Nightly-axon7. I need to relock the bootloader and get back to the stock MiFavor rom so that I can send the phone to ZTE for repair. Can you please explain to a newb in some detail how to achieve that.
Thank you.
Click to expand...
Click to collapse
This guide should do the trick: https://forum.xda-developers.com/axon-7/how-to/guide-axon-7-universal-unbrick-t3814413
soren25 said:
This guide should do the trick: https://forum.xda-developers.com/axon-7/how-to/guide-axon-7-universal-unbrick-t3814413
Click to expand...
Click to collapse
Thank you very much for your help, I am now back to stock B15. The only thing left for me is to relock the bootloader.
hello guys i have unlock my nonor 8 lite bootloader and install TWRP
but stuck in rebooting, I will get back at original condition.
and how to removev bootloader.
thanks
nk2join said:
hello guys i have unlock my nonor 8 lite bootloader and install TWRP
but stuck in rebooting, I will get back at original condition.
and how to removev bootloader.
thanks
Click to expand...
Click to collapse
Remove bootloader??
hassanjavaid8181 said:
Remove bootloader??
Click to expand...
Click to collapse
yes how to remove bootloader and get into original.
nk2join said:
yes how to remove bootloader and get into original.
Click to expand...
Click to collapse
You cannot remove bootloader...
If you want to back to stock
Download stock firmware flash it via dload..
hassanjavaid8181 said:
You cannot remove bootloader...
If you want to back to stock
Download stock firmware flash it via dload..
Click to expand...
Click to collapse
can you explain it in details pls
thanks
nk2join said:
can you explain it in details pls
thanks
Click to expand...
Click to collapse
Ok so you need to rekock the bootloader as
Fastboot oem relock <16 digit code>
Or download the full firmware for your phone and flash via dload method. Dload guide is mentioned in my signature. If you are unable to find the link to original firmware then let me know the buikd number you were on and will try to help.
shashank1320 said:
Ok so you need to rekock the bootloader as
Fastboot oem relock <16 digit code>
Or download the full firmware for your phone and flash via dload method. Dload guide is mentioned in my signature. If you are unable to find the link to original firmware then let me know the buikd number you were on and will try to help.
Click to expand...
Click to collapse
thank you very much but the model I have is not in the list I have
PRA-LA1C185B165
what should to do
when trying to
fastboot oem relock ----------
waiting for device
nk2join said:
thank you very much but the model I have is not in the list I have
PRA-LA1C185B165
what should to do
when trying to
fastboot oem relock ----------
waiting for device
Click to expand...
Click to collapse
First boot the device to fastboot then run this command.
adb reboot bootloader
then issue
fastboot oem relock CODE
nk2join said:
thank you very much but the model I have is not in the list I have
PRA-LA1C185B165
what should to do
when trying to
fastboot oem relock ----------
waiting for device
Click to expand...
Click to collapse
Flash these via dload as mentioned here- https://forum.xda-developers.com/showpost.php?p=73954487&postcount=240
1st main file- http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1458/g104/v86413/f2/full/update.zip
then data file- http://update.hicloud.com:8180/TDS/...13/f2/full/public/update_data_full_public.zip
This should bring to to stock B167 version.
Enjoy.
shashank1320 said:
Ok so you need to rekock the bootloader as
Fastboot oem relock <16 digit code>
Or download the full firmware for your phone and flash via dload method. Dload guide is mentioned in my signature. If you are unable to find the link to original firmware then let me know the buikd number you were on and will try to help.
Click to expand...
Click to collapse
Do you know were to find firmware för PRA-LX1C432B165
magnea said:
Do you know were to find firmware för PRA-LX1C432B165
Click to expand...
Click to collapse
Let me check. will update soon
shashank1320 said:
Let me check. will update soon
Click to expand...
Click to collapse
thanks
magnea said:
thanks
Click to expand...
Click to collapse
Sorry unable to find it. The last firmware I see is PRA-LX1C432B125 and none after that. It may not have been published yet.
magnea said:
Do you know were to find firmware för PRA-LX1C432B165
Click to expand...
Click to collapse
You just need a twrp backup of the oeminfo or flash it in fastboot. That will relock it.
shashank1320 said:
Flash these via dload as mentioned here- https://forum.xda-developers.com/showpost.php?p=73954487&postcount=240
1st main file- http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1458/g104/v86413/f2/full/update.zip
then data file- http://update.hicloud.com:8180/TDS/...13/f2/full/public/update_data_full_public.zip
This should bring to to stock B167 version.
Enjoy.
Click to expand...
Click to collapse
I followed your instruction but when try to put the data on card and do the procedure I got the massage
could not update error and nothing to happen