Tablet stuck in boot loop. Can get into fastboot mode but bootloader is not unlocked. I have tested some fastboot commands and they do work, just none which are useful in fixing the issue. Does anyone know of a place to obtain a bootloader code or any feedback on how to fix this? I have firmware downloaded and have tried the volume-/+ and power and that does not work. Just goes back to the logo page. Assume the only fix currently is through the fastboot. One other thing to note when I boot into fastboot it says PHONE unlocked, FRP unlocked which I assume meant bootloader is unlocked but does not seem to be the case.
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Hi,
I would like to know if there is anyone who knows how to unlock the bootloader on a TF300T with the Unrecoverable bootloader error. I have access to fastboot, yet the "fastboot oem unlock" command doesn't unlock the device.
The entire device is wiped due to following another tutorial for fastboot to recover from the bootloop error, so there is no more way to enter recovery or cold start android... the device has two options, fastboot mode, or being stuck at the asus logo untill the battery runs out. Adb doesn't recognise the device, even with windows drivers installed.
I can't flash anything with fastboot as the bootloader is locked.
Is there a way to unlock the bootloader, or is it gonna cost me repairs?
Grtz
I can't unlock bootloader on my OPO. I tried command: fastboot oem unlock, and fastboot mode is responded with restart to TWRP.
Also I tried a lot of things that i found forums but they did not work. I can't flash anything.
I read somewhere that I can't unlock bootloader without OS installed, but I flash Cyanogenmod 11 (not 11s, and I don't know how), and then I got this problem: https://www.youtube.com/watch?v=jlhBVj89oxU , and my bootloader is still locked.
Does anyone have solution?
Hi,
I have a Nexus 5 (d820) stucked in fastboot mode.
After doing some research, I got the TWRP working as recovery.
When I try to wipe, or flash any rom, even the original ones, I got some errors regarding read-only partitions.
I can LOCK and UNLOCK the boot at will... I can access fastboot/adb, etc...
How can I be sure my memory is defective? (I know it is probably the problem)
Anyone tried to replace the memory? (No warranty anymore)
Thanks for any help!
When you unlock the bootloader, does it stay unlocked?
I can unlock my bootloader but, after rebooting to fastboot, it says the bootloader is locked.
Ok so, this isn't my first time flashing and returning to stock with phones, just the worst. Any help is appreciated.
I unlocked the bootloader, installed TWRP and tried to flash a few ROMS which were not working great so I went to go back to stock and then the **** show happened. Its the LO4 Model. I flashed stock recovery, Relocked the bootloader and tried the Force Flash Update method. Well now the phone is stuck in a boot loop(Cant power it down), cant boot to erecovery/ recovery -- I can get to fast boot mode but the FRP is locked so I can not do anything all commands fail with an error.
Any thoughts? I just need to get it back to stock OR a working ROM- I plan on selling this phone and My wife (it was her phone) has upgraded to a Galaxy S9. If I cant get it to work, I will post it on swappa as is for a cheap price
Thanks!
Same Issue
I did the same thing, however when in fastboot type fastboot oem unlock (put the code here) and this will unlock your bootloader. I did this I even managed to flash the stock system cust recovery and boot, but it doesnt boot into recovory, erecover, or even download mode to download the software from the sd card. Any ideas?
I tried that fastboot code and I get an error because of the FRP lock
I've recently bricked my device trying to install LineageOS, long story short I had to use MSM Tool in order to flash a new, stock ROM. Since I did that I am unable to unlock the bootloader: everytime I do the phone bricks with this following Yellow message on the screen: "upgrade download failed please check your download flow is right". After that I have to use the MSM Tool again to unbrick the Yellow text.
Any ideata how I might unlock the bootloader? Aside from that, the phone works fine.
EDIT: I managed to fix this by OEM updating my device to Android 11 and *then* unlocking the bootloader. Another issue has arisen now, though: whenever I try to boot TWRP from fastboot, the phone reboots and gets stuck in the "Fastboot Mode" OnePlus logo screen. Would anyone know how to fix this, or maybe is there a way to root your phone without using a custom recovery?
Karellen11 said:
I've recently bricked my device trying to install LineageOS, long story short I had to use MSM Tool in order to flash a new, stock ROM. Since I did that I am unable to unlock the bootloader: everytime I do the phone bricks with this following Yellow message on the screen: "upgrade download failed please check your download flow is right". After that I have to use the MSM Tool again to unbrick the Yellow text.
Any ideata how I might unlock the bootloader? Aside from that, the phone works fine.
EDIT: I managed to fix this by OEM updating my device to Android 11 and *then* unlocking the bootloader. Another issue has arisen now, though: whenever I try to boot TWRP from fastboot, the phone reboots and gets stuck in the "Fastboot Mode" OnePlus logo screen. Would anyone know how to fix this, or maybe is there a way to root your phone without using a custom recovery?
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Yes you can ,,install thru boot loader with ADB and fastboot CMD. First you need to extract the boot.img from your oos rom, patch it in magisk app, then put it in your adb folder and run the cmd " fastboot flash boot boot.img .