Question HELP! - Upgraded from A12/F66 to A13/F18 - now the phone crashes when going to the bootloader

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jbradshw

Senior Member
Dec 8, 2010
199
27
Atlanta
2125 AA model OPO9

So my phone has been nagging me to upgrade to A13 for awhile now and I decided to finally bite the bullet and do it, so I backed up everything before I did it.

Now previously, to keep Magisk, I was following the guide to restore the image, do the upgrade, then flash magisk in the inactive slot. But from reading it sounded like after I upgraded to A13, I needed to go into fastboot and boot off the magisk'ed boot image. So I restored the image in magisk and then upgraded to A17 and rebooted, then to A18 (as I had the A18 boot images) and rebooted. Everything came up fine. However, as soon as I boot into the bootloader, I see if for a split second and then it immediately crashes into the Qualcomm crash dump screen. I can still reboot into the OS but I'd really like to have Magisk back if possible.

Edit (More info): When I reboot, I do get a new notice on the pre-boot screen that the device is unlocked that I didn't see before when I was on A12. In addition, in the OS, the OEM unlock is greyed out (with bootloader unlocked) and will not let me lock it again.

My current state is a working phone on A17/F18 with no root but would like to get root back (and a working bootloader for peace of mind).

So I guess my questions are:
1) Is there still a way I can get Magisk in my current state. Without the bootloader I'm assuming I'm SOL...
2) Would a factory reset from within the OS fix the bootloader?
2) If I need to use the MSM tool, where can I find the qualcomm drivers? I found one link but it was a CAB file and I could not get anything working out of that.
 
Last edited:

TheGhost1951

Senior Member
Feb 11, 2009
2,101
553
Garfield
OnePlus 9 Pro
2125 AA model OPO9

So my phone has been nagging me to upgrade to A13 for awhile now and I decided to finally bite the bullet and do it, so I backed up everything before I did it.

Now previously, to keep Magisk, I was following the guide to restore the image, do the upgrade, then flash magisk in the inactive slot. But from reading it sounded like after I upgraded to A13, I needed to go into fastboot and boot off the magisk'ed boot image. So I restored the image in magisk and then upgraded to A17 and rebooted, then to A18 (as I had the A18 boot images) and rebooted. Everything came up fine. However, as soon as I boot into the bootloader, I see if for a split second and then it immediately crashes into the Qualcomm crash dump screen. I can still reboot into the OS but I'd really like to have Magisk back if possible.

Edit (More info): When I reboot, I do get a new notice on the pre-boot screen that the device is unlocked that I didn't see before when I was on A12. In addition, in the OS, the OEM unlock is greyed out (with bootloader unlocked) and will not let me lock it again.

My current state is a working phone on A17/F18 with no root but would like to get root back (and a working bootloader for peace of mind).

So I guess my questions are:
1) Is there still a way I can get Magisk in my current state. Without the bootloader I'm assuming I'm SOL...
2) Would a factory reset from within the OS fix the bootloader?
2) If I need to use the MSM tool, where can I find the qualcomm drivers? I found one link but it was a CAB file and I could not get anything working out of that.
Google for latest Qualcomm 9008 USB drivers