Database Info

Bricked my Mate 8 - Downgrading from B330 to B211

Failed attempt to downgrade from B330 to B211:
Model: L29C636B330
- Got to eRecovery, but wifi can't find anything
- put B330 on SD card dload but 3-button reset only bring me to a EMUI menu with Reboot, Wipe data and Wipe Cache options. Cache wipe could finish (seemingly), wipe data would quit midway, sometimes in a couple of seconds, sometime longer. EMUI logo turns to red exclamation mark
- fastboot works... however, phone is locked (I suppose that means bootloader locked?) therefore, fastboot flash is not working. adb push file - device not responding.
This phone is all stock with no prior rooting/bootloader unlock. Except for using FF to get to B330 - to be fair, B330 worked fine.
I did not bother to get the paid unlock code (should I?), as from I what I read, it probably won't oem unlock because I did not have the dev option enabled prior, and I can't seem to wipe the device either.
Pardon my repost while this thread is still fresh... https://forum.xda-developers.com/showthread.php?t=3563299 because I have not messed with 3rd party tools yet and I want to make sure people can respond to my case specifically. Though it is worth noting perhaps that this could be caused by B330?

TLbonchef1234 said:
Failed attempt to downgrade from B330 to B211:
- Got to eRecovery, but wifi can't find anything
- put B330 on SD card dload but 3-button reset only bring me to a EMUI menu with Reboot, Wipe data and Wipe Cache options. Cache wipe could finish (seemingly), wipe data would quit midway, sometimes in a couple of seconds, sometime longer. EMUI logo turns to red exclamation mark
- fastboot works... however, phone is locked (I suppose that means bootloader locked?) therefore, fastboot flash is not working. adb push file - device not responding.
This phone is all stock with no prior rooting/bootloader unlock. Except for using FF to get to B330 - to be fair, B330 worked fine.
I did not bother to get the paid unlock code (should I?), as from I what I read, it probably won't oem unlock because I did not have the dev option enabled prior, and I can't seem to wipe the device either.
Pardon my repost while this thread is still fresh... https://forum.xda-developers.com/showthread.php?t=3563299 because I have not messed with 3rd party tools yet and I want to make sure people can respond to my case specifically. Though it is worth noting perhaps that this could be caused by B330?
Click to expand...
Click to collapse
Refer to this link
VDO-GUIDE (Mate8-C636-C432-How to rollback from EMUI 4.1 to EMUI 4.0- NON ROOT)
https://forum.xda-developers.com/mate-8/general/vdo-guide-mate8-c636-how-to-rollback-t3480697

dexz said:
Refer to this link
VDO-GUIDE (Mate8-C636-C432-How to rollback from EMUI 4.1 to EMUI 4.0- NON ROOT)
https://forum.xda-developers.com/mate-8/general/vdo-guide-mate8-c636-how-to-rollback-t3480697
Click to expand...
Click to collapse
Thanks. But nope. I am already in brick mode. The 3-button reset did not seem to pick up this rollback package in the SD dload folder and showed the aforementioned wipe data menu instead.

TLbonchef1234 said:
Thanks. But nope. I am already in brick mode. The 3-button reset did not seem to pick up this rollback package in the SD dload folder and showed the aforementioned wipe data menu instead.
Click to expand...
Click to collapse
Did you try to unlocked your bootloader first?

dexz said:
Did you try to unlocked your bootloader first?
Click to expand...
Click to collapse
No. Because DC-Unlock seems to assume access to phone and enable USB port for "manufacturer mode". My phone is in bricked as described in my original post. I guess my only options are to see if Huawei will give me the key still or RMA the sucker?

TLbonchef1234 said:
No. Because DC-Unlock seems to assume access to phone and enable USB port for "manufacturer mode". My phone is in bricked as described in my original post. I guess my only options are to see if Huawei will give me the key still or RMA the sucker?
Click to expand...
Click to collapse
Since you are still in bootloader locked. You might try to ask huawei service center to make your phone functional again. That if you bought your phone at your region. Or else request bootloader code via huawei website.

TLbonchef1234 said:
No. Because DC-Unlock seems to assume access to phone and enable USB port for "manufacturer mode". My phone is in bricked as described in my original post. I guess my only options are to see if Huawei will give me the key still or RMA the sucker?
Click to expand...
Click to collapse
Why did not you save the code to the PC?
One should in any case

dexz said:
Since you are still in bootloader locked. You might try to ask huawei service center to make your phone functional again. That if you bought your phone at your region. Or else request bootloader code via huawei website.
Click to expand...
Click to collapse
Yes. Emailed them. Will have to wait for their reply... I dont know if I can still get the code from them because I cannot login for 14 days continuously. Will see what they say.

letschky said:
Why did not you save the code to the PC?
One should in any case
Click to expand...
Click to collapse
What code Read my original post. I had no intention to mess with custom OS so I never unlocked my bootloader. For the record, I used to build my own kernel and mess with custom OSs all year long, but as Android matures I don't see much of that need anymore.
You do have a point though, I trusted Huawei too much. Should have obtained the code ahead of time regardless.

[HELP] No keyboard only Google Voice

after I reset my phone i want to type the wifi password and i don't have keyboard only google voice, and i can' go into settings because it's like first boot, and i have bootloader locked and frp locked in fastboot, and because is not enough i have and google frp.. how can i solve this?

C0oL3r said:
after I reset my phone i want to type the wifi password and i don't have keyboard only google voice, and i can' go into settings because it's like first boot, and i have bootloader locked and frp locked in fastboot, and because is not enough i have and google frp.. how can i solve this?
Click to expand...
Click to collapse
Power of the phone. Now press power button and volume down simultaneously. It will boot to erecovery then select the first option.

You're missing a data_hw_XX.zip package for your region. Not a big deal. It happened to me when I didn't understand how to flash software to our phone and once when updating through FirmwareFinder. Give us more details regarding your phone (which region is it) and how this happened and we'll help you.

C0oL3r said:
after I reset my phone i want to type the wifi password and i don't have keyboard only google voice, and i can' go into settings because it's like first boot, and i have bootloader locked and frp locked in fastboot, and because is not enough i have and google frp.. how can i solve this?
Click to expand...
Click to collapse
you have many options:
factory reset again (which may not solve tthe issue)
or
unlock bootloader> install twrp> install any 3rd party keyboards zip (search in the xda, you might get any)
or
try to connect your phone to pc and check if adb is working, if yes, follow the procedure:
1. download any 3rd party keyboard app and rename it as keyboard.apk and place it inside sdktools folder
2.open command window and type the following command
Code:
adb install keyboard.apk
now reboot your phone and try , you might have your keyboard
(ask me if you have any doubt regarding this procedure)
or
you can even do a complete firmware flash of update.app through dload method (easiestt of all the above methods, but you will lose all the data inside your internal storage)

I solved, i reinstalled b131 firmware and keyboard appears, i bypassed google verification and i make the updates, now it s working good, thx all.
Can you help me to unlock bootloader without appear me FRP Lock and the Enable OEM Unlock to appear grey again?

Rommco05 said:
:good: frd-l14?? I think this very good LastStandingDroid described, right after send u zip witch turn back phone (old thread u remember)
Click to expand...
Click to collapse
i have frd-l09, i remember but in don t see his message because i have not looked in that thread. And how i enter in telegram chat?

Rommco05 said:
omg sorry my friend... coolest35 and COoL3r is little bit a same
I don't use telegram, so I will chcek it this thread
Click to expand...
Click to collapse
Oh, ok, no problem my friend

Well bro, i saw oem unlock is greyed out only when u unlock the bootloader.

Same Issue
sysak said:
You're missing a data_hw_XX.zip package for your region. Not a big deal. It happened to me when I didn't understand how to flash software to our phone and once when updating through FirmwareFinder. Give us more details regarding your phone (which region is it) and how this happened and we'll help you.
Click to expand...
Click to collapse
I'm hoping someone will advise me. My Honor 8 FRD-L04 is soft bricked. I did or tried to do a factory reset, had originally TWRP, the bootloader is in Relocked status, not unlocked like I want it, I did the dload process with the only thing that would load which was the Rollback from Huawei, now I can't input information on the setup screens because all I get is the stupid Google Voice. PLEASE HELP ME.
UPDATE: Never mind I fixed it. I'm not really for sure how either but I think it mainly was just persistence.

Anyone managed to root lg k51?

I can't find anything definitive about whether it's rootable or not

Same here i tried every root app possible and failed.

just unlock bootloader and flash twrp
after that flash latest magisk zip hope it will work

Bhanu8082 said:
just unlock bootloader and flash twrp
after that flash latest magisk zip hope it will work
Click to expand...
Click to collapse
No need to flash TWRP: Booting into it is sufficient.

Bhanu8082 said:
just unlock bootloader and flash twrp
after that flash latest magisk zip hope it will work
Click to expand...
Click to collapse
How did you unlock the bootloader?

sCriptKittY1987 said:
How did you unlock the bootloader?
Click to expand...
Click to collapse
simple , go to about phone and try to find build number,
after you find build number tap on it until it says you are in developer mode
after that head on to developer option (it may be inside about phone section or above about phone section) turn on the option which says allow oem unlock. then,
just reboot to recovery mode either by pressing volume up or volume down key with power button.
after you enter recovery connect usb cable and open command prompt in pc and make sure that lg device drivers are installed on your pc also make sure you have adb and fastboot installed.
ok, after all this type command
adb devices
if any thing shows us then you have successfully connected your device.
after it type
adb reboot bootloader
then your mobile should restart and show fastboot mode in screen
type command
fastboot oem unlock
and done your bootloader is unlocked.

Bhanu8082 said:
just unlock bootloader and flash twrp
after that flash latest magisk zip hope it will work
Click to expand...
Click to collapse
Where did you find a tarp img for the LG k51?

sCriptKittY1987 said:
Where did you find a tarp img for the LG k51?
Click to expand...
Click to collapse
tarp image????? just follow the tutorial.

I meant TWRP recovery . After you've unlocked the bootloader where did you get a custom recovery to flash for the LG k51. From what I saw on Team Wins website, there isn't one.

Bhanu8082 said:
simple , go to about phone and try to find build number,
after you find build number tap on it until it says you are in developer mode
after that head on to developer option (it may be inside about phone section or above about phone section) turn on the option which says allow oem unlock. then,
just reboot to recovery mode either by pressing volume up or volume down key with power button.
after you enter recovery connect usb cable and open command prompt in pc and make sure that lg device drivers are installed on your pc also make sure you have adb and fastboot installed.
ok, after all this type command
adb devices
if any thing shows us then you have successfully connected your device.
after it type
adb reboot bootloader
then your mobile should restart and show fastboot mode in screen
type command
fastboot oem unlock
and done your bootloader is unlocked.
Click to expand...
Click to collapse
When I typed fastboot oem unlock I get a reply saying <waiting for any device>

sCriptKittY1987 said:
When I typed fastboot oem unlock I get a reply saying <waiting for any device>
Click to expand...
Click to collapse
I doubt that's going to work, but let me know if it does. Carriers and manufacturers use a variety of sophisticated security schemes like requiring lengthy codes that only they can provide, etc to purposely make it very difficult to unlock bootloaders. Tmobile gave me a K51 for free. They apparently feel the have to pay for it by spying on me. I bought a moto g7 plus unlocked for $117 directly from Moto and put Lineage on it, no gapps Would love to use thie k51 though if anyone figures it out because it's more waterproof and bigger battery.

mgsgta3 said:
I can't find anything definitive about whether it's rootable or not
Click to expand...
Click to collapse
Whether device's bootloader is unlockable / device's Android is root-able or not you easily can find out by means of ABB:
Code:
adb shell "getprop ro.oem_unlock_supported"
If returned value is 1, then it's supported otherwise it's not.

sCriptKittY1987 said:
Where did you find a tarp img for the LG k51?
Click to expand...
Click to collapse
and let me guess my doofus luck im guessing no way to unlock it with out a P.C. like nuttin at all?

Absolutely no of the crap above works at all in any capacity especially sprint. Generic postings like hold volume down and power also doesn't work to go into fastboot so if you guys are following the advice of some of these guys don't because you'll drop more money on a new phone then you will unlocking it some variants verizon is one I think you have to call LG I know I spent 6 hrs on the phone with "tech support" aka "jokes with a screen to read from" to FINALLY get into touch with an engineer who told me the only way "NOW" to unlocked the bootloader is in his office which means it has to be depot to be unlocked which as of this moment lg is not doing that WILL change in the future that was 12/03/2020. Even running external adb with kali linux to hack it broke the bootloader and sends you into an infinite reboot loop

jwoegerbauer said:
Whether device's bootloader is unlockable / device's Android is root-able or not you easily can find out by means of ABB:
Code:
adb shell "getprop ro.oem_unlock_supported"
If returned value is 1, then it's supported otherwise it's not.
Click to expand...
Click to collapse
This returns no value on a locked bootloader because even with Dev. Opt. Enables its still read only until bootloader is unlocked this is verified on two carriers k51's sprint and att. However it is unlockable we haven't found it and/or LG has not added this service to their site which is where you will get the info needed for the unlocked.

Oh my. You know you need to do all this from a computer, right? Can't do it in an Android terminal because fastboot commands are only valid in a phone's bootloader environment. And if you didnt know that then rooting and all of the dangers that come with it just isnt for you. But yes, it's rootable. So here you go anyway.
Reboot the phone to download mode.
Install LG's K51 usb drivers, and install adb and fastboot, on your computer.
Open a command prompt and type: fastboot oem unlock
If it does anything other than pat you on the back and tell you it's proud of you and how well you follow instructions, then go back and follow the effing instructions.
Otherwise, type: fastboot reboot.
Download magisk manager.
Do the magisk manager.
Use the LG flash tool on your computer to flash what you just did when you did the magisk manager.
And presto, you're rooted. Or I successfully left out enough info and you dont know how to use Google, leaving your device still not rooted. And thank god for that.

Ive been learning from xda for some time now. Bricked a few phones in my learning curve and tonight i had my first success with my g7, and wrighting this on my new k51. This is my first post and I think that was pretty rude of you to say. This is supposed to be a place to learn, share knowledge, and help those who are less educated. Not look down on people and say crap like that. If he wants to learn even if it takes a couple bricked phones to do it, let him. Either give him the proper procedures or dont say nothing at all. How long did it take you? How many phones? Its taking me quit a while but i am finaly getting somewhere. Keep with it guy. Dont let this dude, or any one else for that matter, bring you down.

Kenwoodquality69 said:
Ive been learning from xda for some time now. Bricked a few phones in my learning curve and tonight i had my first success with my g7, and wrighting this on my new k51. This is my first post and I think that was pretty rude of you to say. This is supposed to be a place to learn, share knowledge, and help those who are less educated. Not look down on people and say crap like that. If he wants to learn even if it takes a couple bricked phones to do it, let him. Either give him the proper procedures or dont say nothing at all. How long did it take you? How many phones? Its taking me quit a while but i am finaly getting somewhere. Keep with it guy. Dont let this dude, or any one else for that matter, bring you down.
Click to expand...
Click to collapse
Yo Ken,
So your K51 rooted?
If so, maybe you could provide a step by step?

I haven't done this yet but is it verified working? I did a google search came across the method to do the unlocking but it showed it was a failed project?

TexasPride said:
I haven't done this yet but is it verified working? I did a google search came across the method to do the unlocking but it showed it was a failed project?
Click to expand...
Click to collapse
O lord i hope this isnt true

Question TMobile OP9 bootloader unlock process stuck

Hello,
I am trying to convert Tmobile OP9 to Global version and I am stuck at a basic step of getting the oem unlock code when trying to unlock the bootloader.
Details:
1. got my network unlocked from mobbdeep couple of weeks back.
2. Under Settings > "Network Unlock" status shows as unlocked
3. Installed the latest SDK as I am following the guide here to get the bootloader unlocked. When I boot in fastmode and run the oem command it stays at "waiting for device" and returns nothing.
Code:
fastboot oem get_unlock_code
When I run this, device list shows empty
Code:
adb devices
- Enabled USB debugging and stay awake options is checked from what I read on few posts
- When I restart the phone normally and then run "adb devices" it shows my phone listed
- Working on windows machine
What am I doing wrong here ?
TIA !!
PS: attached image shows the device state as Locked

If your phone is SIM unlocked, follow the instructions to convert from T-Mo to global.
Then you'll have the normal OEM unlock in dev options. Then you can just do the fastboot oem unlock and call it good.
Much easier and you don't have to deal with the token. It worked well for me.

I have the global version, not TMobile, so this might not apply
But I had a similar issue with fastboot not recognizing my device, the solution is disabling driver signing in windows and manually updating the driver in device manager
Check the "root OnePlus9" thread.. on page 8 at the bottom there's a guide on how to do it

Superguy said:
If your phone is SIM unlocked, follow the instructions to convert from T-Mo to global.
Then you'll have the normal OEM unlock in dev options. Then you can just do the fastboot oem unlock and call it good.
Much easier and you don't have to deal with the token. It worked well for me.
Click to expand...
Click to collapse
Thanks for your response.
I tried that earlier assuming the same but it asked me to first flash the unlock token for which I am following the steps
I was however able to get the device listed after manually uninstalling/installing adb drivers

avid_droid said:
Check in device manager. If you have the yellow triangle on your phone in device manager just download android composite driver and update it through device manager/browse computer/ select unzipped folder and click OK.
Might be the issue
Click to expand...
Click to collapse
That was indeed the issue. I manually uninstalled and installed the drivers which helped and I can now see the device listed and also got the oem unlock code successfully.
I have submitted the form with Tmobile for the unlock token, hopefully that should do it.
Thanks !

This thread was helpful as well. Thanks !

cass89 said:
I have the global version, not TMobile, so this might not apply
But I had a similar issue with fastboot not recognizing my device, the solution is disabling driver signing in windows and manually updating the driver in device manager
Check the "root OnePlus9" thread.. on page 8 at the bottom there's a guide on how to do it
Click to expand...
Click to collapse
This thread was helpful as well. Thanks !

avid_droid said:
If going for root and conversion,don't forget to use partitions manager to back up persist.img and modemst1,modemst2.
Can't stress that enough. This is my second oneplus device messed up in a 3 week time period
Click to expand...
Click to collapse
I will definitely.
I remember doing the same process for OP6T. Some users had mentioned about the issues surfacing and that helped o go back to stock
That reminds, like 6T are there any known issues post converting ?
I remember play services weren't functioning fine as well as there was no google pay. My corporate apps also didnt install due to missing security certificates.
Same applies for OP9 as well ?

FRNK8 said:
I will definitely.
I remember doing the same process for OP6T. Some users had mentioned about the issues surfacing and that helped o go back to stock
That reminds, like 6T are there any known issues post converting ?
I remember play services weren't functioning fine as well as there was no google pay. My corporate apps also didnt install due to missing security certificates.
Same applies for OP9 as well ?
Click to expand...
Click to collapse
You might want to backup your modem partition just in case you want to try the T-Mobile modem. I've heard reports the the AA modem works great, and also that the AA modem sucks, so YMMV

craznazn said:
You might want to backup your modem partition just in case you want to try the T-Mobile modem. I've heard reports the the AA modem works great, and also that the AA modem sucks, so YMMV
Click to expand...
Click to collapse
Hey thanks for the heads up. I will
Would infact first go through the conversion steps to go back to Tmo just incase things go south.

avid_droid said:
If going for root and conversion,don't forget to use partitions manager to back up persist.img and modemst1,modemst2.
Can't stress that enough. This is my second oneplus device messed up in a 3 week time period
Click to expand...
Click to collapse
craznazn said:
You might want to backup your modem partition just in case you want to try the T-Mobile modem. I've heard reports the the AA modem works great, and also that the AA modem sucks, so YMMV
Click to expand...
Click to collapse
Following the guide here, I just performed the bootloader unlock successfully. Per your suggestion, I want to backup the modem files before I proceed any further.
I cant seem to recollect how do I backup the modem files when I did the same conversion for OP6T. Can you please guide me here before I proceed with the next steps.
I tried installing the partitions backup but it wont allow me without root. I vaguely remember that I hadn't rooted my device the last time while backing up these files or is root needed ?
TIA !

You need to root. Rooting is fine and won't affect your modem. While you are there, back up persist, modemst1, modemst2, modem_a, and modem_b. _a and _b should be different versions and you can pick and choose which one you might want to use (or stick with AA)

craznazn said:
You need to root. Rooting is fine and won't affect your modem. While you are there, back up persist, modemst1, modemst2, modem_a, and modem_b. _a and _b should be different versions and you can pick and choose which one you might want to use (or stick with AA)
Click to expand...
Click to collapse
Can you help me with the steps to root ? Just want to be careful while doing so.
I saw some posts but that was related to the Tmobile OP9Pro(in my case its its Tmo Op9). The boot images were different so I didnt try to play around.
Thanks !

Just try to fastboot boot a magisk patched img and see if it works.
Try https://forum.xda-developers.com/t/root-oneplus-9.4253651/
Don't flash anything, just go to fastboot
Code:
fastboot boot patched_boot.img

craznazn said:
Just try to fastboot boot a magisk patched img and see if it works.
Try https://forum.xda-developers.com/t/root-oneplus-9.4253651/
Don't flash anything, just go to fastboot
Code:
fastboot boot patched_boot.img
Click to expand...
Click to collapse
Okay did this step.
Downloaded an copied stock image and the boot_patched image provided on the link and copied to my phones internal storage
Also as next step said, rebooted the phone
- went to Magisk app > install > selected boot_patched.img from internal storage
- phone restarted
- When I open the partitions backup app it still shows "device is not rooted" warning
What step did I miss ?

FRNK8 said:
That was indeed the issue. I manually uninstalled and installed the drivers which helped and I can now see the device listed and also got the oem unlock code successfully.
I have submitted the form with Tmobile for the unlock token, hopefully that should do it.
Thanks !
Click to expand...
Click to collapse
do you have a link for the driver I'm having the same problem

Question Can´t access to fastboot

I am trying to unlock my nord ce 2 bootloader but everytime I try to access bootloader mode, it says something like Unlock_Verify_device ok and then reboots
how can I unlock the bootloader? Same happens on my nord 2. Oem unlocking is enabled and I have no selection of advanched startup options. I have magisk boot.img to flash

Can't say I experienced that myself. The message you got looks promising. The 'unlock_verify_device ok' message means you're getting to fastboot. But I'm not sure why it's rebooting. Do you have enough time to run the command 'fastboot devices'?
Also, what version is your firmware?
Here is the guide I used when I was unlocking the bootloader: https://www.droidwin.com/how-to-unlock-bootloader-on-oneplus-nord-ce-2/

I am running android 12 beta on oxygenos
Edit: fastboot doesn´t even find the device
Oh, now it tells that serial is not match. what's going on?

so? Can anyone help? Phone keeps saying that serial is not match and then reboots. Is this phone just a joke or something? Gonna buy samsung if yes.

What model is your phone? I wasn't aware of the Android 12 beta being available for the Nord CE 2. Another thing to try is this tutorial to manually install the OnePlus drivers: https://www.droidwin.com/fix-android-device-not-showing-in-fastboot-mode/

Was looking on the nord ce 1 xda Forum. It's only recently that a few roms and twrp are starting to appear, so there is hope. IMO oneplus need to take £$50 off the price, more users = more chance of getting more development

mr_munch said:
Can't say I experienced that myself. The message you got looks promising. The 'unlock_verify_device ok' message means you're getting to fastboot. But I'm not sure why it's rebooting. Do you have enough time to run the command 'fastboot devices'?
Also, what version is your firmware?
Here is the guide I used when I was unlocking the bootloader: https://www.droidwin.com/how-to-unlock-bootloader-on-oneplus-nord-ce-2/
Click to expand...
Click to collapse
I don't have fastboot on my device Nord ce 2 ..when I type fastboot reboot bootloader then it directly reboot into my device ..Please somebody help me.Im on current Android 12.1 version

neilop7 said:
I don't have fastboot on my device Nord ce 2 ..when I type fastboot reboot bootloader then it directly reboot into my device ..Please somebody help me.Im on current Android 12.1 version
Click to expand...
Click to collapse
Fastboot is stuffed on this device. There's no longer a way to make fastboot work.

burningcreation said:
Fastboot is stuffed on this device. There's no longer a way to make fastboot work.
Click to expand...
Click to collapse
I wanna unlock bootloader..is there any way to unlock ?

neilop7 said:
I wanna unlock bootloader..is there any way to unlock ?
Click to expand...
Click to collapse
No unfortunately.

burningcreation said:
No unfortunately.
Click to expand...
Click to collapse
Did you able to unlock bootloader?

neilop7 said:
Did you able to unlock bootloader?
Click to expand...
Click to collapse
No I am not able to unlock the bootloader either. There is currently nothing we can do.

Hi everyone, any update on this? Did someone manage to unlock the bootloader?

If I'm not mistaken. You can rollback to android 11 to get it back.

I'm currently facing the same problem, so I tried rolling back and have downloaded over 20 rollback zips now, and extracted them. All won't work, it reboots in recovery. And it is like fastboot just doesn't exist. So yeah they probably messed it up.
I'm so sad, I switched from Iphone to Oneplus partly because of the rooting options. So sad
Can I do this trough adb or not?

NiekKamer0105 said:
I'm currently facing the same problem, so I tried rolling back and have downloaded over 20 rollback zips now, and extracted them. All won't work, it reboots in recovery. And it is like fastboot just doesn't exist. So yeah they probably messed it up.
I'm so sad, I switched from Iphone to Oneplus partly because of the rooting options. So sad
Can I do this trough adb or not?
Click to expand...
Click to collapse
You don't extract it though. You just rename it by removing the _Rollback at the end.
See here: https://droidwin.com/downgrade-oneplus-nord-ce-2-from-android-12-to-android-11/