I ran fastboot oem unlock and it rebooted like normal after wiping. Now I am trying to return to stock and anytime I attempt to flash anything it just tells me flash failed due to device not being unlocked. What's going on?
I attempted to relock it and re unlock it but that hasn't seemed to work.
Im seeing people are rooted and stuff but i dont see anywhere how to unlock the bootloader and root the phone? I have the GM1917 version right from oneplus. Thx
I have the one from TMobile. I got it unlocked but need to get this stupid unlock.bin file from them and it takes weeks I'm told. If your phone isn't TMobile... You should be able to flash TWRP to the b slot and root with magisk. It's what I was going to do until it told me I cannot just OEM unlock from bootloader menu. Boooo
Turn on oem unlock from developer options then put phone in fastboot mode and connect to PC. Fastboot oem unlock is the command you'll run.
I upgraded to the Note 20 ultra and I want to relock my OnePlus 8 5G bootloader for resale. I did unlock the sim as it was originally for TMobile. But when I recently relocked the bootloader it basically was soft bricked, and wouldn't boot past some weird error message about something corrupt. When I unlocked the bootloader again that message went away and it booted fine. One issue is that it won't take an ota it keeps failing to even download. I've tried many times. Not sure what's up with it, but if there is a way to relock the bootloader and have it boot and update the ota I'd be much appreciative.
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follow these steps:
1. backup your persist.img file
2. use unbrick tool to recover the phone to an orignal version
3. upgrade to the newest version through OTA
4a. if the fingerprint works, it works all done.
4b. if the fingerprint sensor is abnormal, unlock your phone and flash persist.img, then relock your phone. There will be a series of wiping data during your lock/unlock operation.
I have a SIM Unlocked OnePlus 7 Pro 5G that originally started out as a sprint phone, its SIM unlocked (instantly activated on my verizon sim) but OEM unlock is still greyed out? Thought it was supposed to enable once the device is sim unlocked?
fixed above but now if I try to flash twrp or any custom Boot.img for a rom, it freezes and I have to MSM the device.? Even tried a GSI, just boots back to bootloader... actually seems to freeze if I do ANYTHING in fastboot as far as flashing anything. I even fastboot flashed 9.5.11 and it boots straight to bootloader
U just need the proper TWRP, and you don't need to reflash msm every time, it's all just the boot image.
My device is a OnePlus 8T originally purchased from T-Mobile. I unlocked the bootloader to flash OxygenOS 12 in the open beta. Everything is working splendidly, but I can't seem to relock the bootloader. Using fastboot flashing lock, I get an error message asking me to flash the unlock token first. When attempting fastboot flash cust-unlock unlock_token.bin, I get an error asking to turn on OEM unlocking. OEM unlocking is greyed out because the bootloader is unlocked. Can you help? Thanks!
scothouse said:
My device is a OnePlus 8T originally purchased from T-Mobile. I unlocked the bootloader to flash OxygenOS 12 in the open beta. Everything is working splendidly, but I can't seem to relock the bootloader. Using fastboot flashing lock, I get an error message asking me to flash the unlock token first. When attempting fastboot flash cust-unlock unlock_token.bin, I get an error asking to turn on OEM unlocking. OEM unlocking is greyed out because the bootloader is unlocked. Can you help? Thanks!
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here brother:
Thanks, but my phone asks for an unlock token when I execute fastboot oem lock or fastboot flashing lock I get the error message: FAILED (remote: 'Please flash unlock token first.') When attemptIng to flash the token, I get the error message: FAILED (remote: 'Please turn on OEM unlocking in Settings - Developer option'). I heard back from OnePlus Support, and it sounds like I would need to perform a factory reset in order to lock the bootloader. That would revert the phone to the T-Mobile OxygenOS 11 image. I unlocked the bootloader so that I could flash the global OxygenOS 12 image. Also, I'm hearing from other folks in the OnePlus Community that the bootloader should remain unlocked if I'm in the beta. I'm not sure about that, but, for now, I haven't found a way to lock the bootloader and retain the beta image. Thanks, tho, I appreciate the link.
scothouse said:
Thanks, but my phone asks for an unlock token when I execute fastboot oem lock or fastboot flashing lock I get the error message: FAILED (remote: 'Please flash unlock token first.') When attemptIng to flash the token, I get the error message: FAILED (remote: 'Please turn on OEM unlocking in Settings - Developer option'). I heard back from OnePlus Support, and it sounds like I would need to perform a factory reset in order to lock the bootloader. That would revert the phone to the T-Mobile OxygenOS 11 image. I unlocked the bootloader so that I could flash the global OxygenOS 12 image. Also, I'm hearing from other folks in the OnePlus Community that the bootloader should remain unlocked if I'm in the beta. I'm not sure about that, but, for now, I haven't found a way to lock the bootloader and retain the beta image. Thanks, tho, I appreciate the link.
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Yeah, there is no way to retain the beta image until OnePlus Gives an official update of OxygenOS 12 for your phone. and if you want to lock bootloader, u have to be on the official version.
BUT THERE IS NO WAY TO LOCK BOOTLOADER AND USE OxygenOS 12 FOR NOW. SO STOP SEARCHING
Gotcha - makes sense and will do. Thanks again!
Spuffyffet said:
BUT THERE IS NO WAY TO LOCK BOOTLOADER AND USE OxygenOS 12 FOR NOW. SO STOP SEARCHING
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There is no mentioning of unlocking bootloader for OB1 OOS12 in official thread.
@scothouse I ran into a smiliar situation with the OnePlus 8 5g tmobile. After installing the global Rom and upgrading to android 12 i couldnt relock it.
so what i did was downgrade my phone to android 11. the OEM unlocking was still greyed out but i was able to execute the fastboot flash cust-unlock unlock_token.bin command. then voila i locked it.
once you do that then update your phone then you are down.
Just use MSM tools. Of course everything will be factory reset
samdaman91 said:
@scothouse I ran into a smiliar situation with the OnePlus 8 5g tmobile. After installing the global Rom and upgrading to android 12 i couldnt relock it.
so what i did was downgrade my phone to android 11. the OEM unlocking was still greyed out but i was able to execute the fastboot flash cust-unlock unlock_token.bin command. then voila i locked it.
once you do that then update your phone then you are down.
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Were you able to re-upgrade to Android 12 once the bootloader was locked again?
jefffeely said:
Were you able to re-upgrade to Android 12 once the bootloader was locked again?
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Yes with OTA
In case anyone is on Android 13, I was able to re-lock the bootloader without issue.
I didn't need the unlock_token back when I flashed the global ROM to replace the Tmo one. I do need the token for the re-lock purpose though