Hello, I recently got an update on my OnePlus 7T Pro. I dowloaded the update and I forgot to install it before installing magisk to the inactive slot via the magisk app.
Now my phone won't boot. It just boots up reboots and then goes into like recovery or some black screen with white text and minimal options.
Does anyone know how I can fix this?
At first I tried to flash a new boot.img because I thought it might be wrong. But that didn't fix it. Instead I had to flash the stock rom again to make everything work. And now my phone has booted up again with all data still there since I leave my bootloader unlocked.
I followed this tutorial:
[ROM][STOCK][FASTBOOT][OP7TP] Stock Fastboot ROMs for OnePlus 7T Pro
Things are changing with the advent of project treble and seamless updates. OnePlus will no longer release ROMs flashable via recovery (either stock) because is no more needed. The updates will be done on the slot not used for example if you are...
forum.xda-developers.com
Related
Hi there,
Yesterday I thought it was a good idea to flash a new rom (I bought my 2S early so I had a chinese rom I wanted to get rid off for a while).
My device is already unlocked and TWRP worked like a charm, that is, until today and last night. I first tried to flash lineageOS (https://forum.xda-developers.com/xi.../rom-lineageos-16-0-xiaomi-mi-mix-2s-t3862712) and to my surprise it didn't boot after that, it just straight went back to fastboot.
So I flashed to the original rom (https://en.miui.com/download-343.html) using the fastboot method and the MiFlash program. My phone booted up again, but when I tried to flash Magisk to have root it got stuck and went straight to Recovery this time (as opposed to fastboot).
Next I tried to flash again using fastboot and then flash the rom I wanted (lineageOS). This time, lineageOS showed the boot screen from that rom, but it got stuck there for almost 5 minutes and then I decided to give up. Now, no matter which twrp or rom I try I either end up not being able to boot it and if I do I cannot flash Magisk for root. Is there anyone who has a solution? Everyone seems to be able to install lineageOS just fine... Thanks!
Here's what I tried so far:
- Flashing original roms (older versions too)
- Using fastboot format data, system, cache to remove all data instead of just using TWRP
- Flashing 3 different unofficial roms (neither worked, all were stuck in their respective bootscreen for at least 5 minutes)
When flashing magisk try this method from NOS_bzone
Hope this helps
Seems like I'm having a quite similar problem.... https://forum.xda-developers.com/xiaomi-mi-mix-2s/help/boot-installing-custom-rom-t3868623
I managed to flash the global official rom + Magisk by these steps:
Download official rom (from: https://en.miui.com/download-343.html) (I used the fastboot method, clean all, NOT clean all and lock)
Download magisk
Download MiPa kernel: https://forum.xda-developers.com/xiaomi-mi-mix-2s/development/kernel-mipa-kernel-t3831437
Flash the rom first using fastboot and MiFlash, then go to TWRP, then magisk and then MiPa (it will retain magisk)
After that I was able to boot and retain a successful root. I don't know about custom roms at the moment, but at this point after working on it for more than 12 hours, I don't feel like trying
Hey guys,
so first of all I wanna let you know that my device is not bricked or something (it was a couple of times though).
But let's get started with my issue. For me, personally, I have experienced that the slot system (A/B Slot) doesn't work that good. I had a OnePlus 3T before and I never had any problems with flashing, but now...
My impression is that it's a lot easier to brick its' device than before. Every time I want to flash a new OS I gotta use the msmtool.
1. I boot to recovery mode through the OS
2. I boot to fastboot trough the OOS stock recovery
3. I try to flash TWRP to erase the system
4. Flashing works, but I can no longer boot into recovery mode
5. I have a bootloop (fastboot mode only)
6. I have to use that msmtool
7. I have some old OOS (9.5.5 or something)
8. I unlock the bootloader through the OS & fastboot
9. I boot into TWRP, delete everything and flash another ROM
10. Everything works and the cicle begins again​
I really don't know why I'm always stuck in that bootloop... Maybe you guys could help me and give me your personal opinion on the slot system?
I totally know that feeling. I started with a tmo op7p, flashed international, unlocked bootloader, try to boot TWRP, and nope. Switch slot, it works. Flash it, great. Make a backup with TWRP of my working system, flash ROMaur, won't do anything but boot to TWRP. Open TWRP file manager and every file on internal storage is a ton of folders with jumbled strings of letters and numbers for names. MSM tool back to intl stock, try lineage... Nope. Keeps telling me to do a factory reset. I did, but I do another and still boot loop. MSM to intl, try other roms, same outcome.
I can unlock my bootloader and root it and run intl stock but that's it.
oxadedzn said:
Hey guys,
so first of all I wanna let you know that my device is not bricked or something (it was a couple of times though).
But let's get started with my issue. For me, personally, I have experienced that the slot system (A/B Slot) doesn't work that good. I had a OnePlus 3T before and I never had any problems with flashing, but now...
My impression is that it's a lot easier to brick its' device than before. Every time I want to flash a new OS I gotta use the msmtool.
1. I boot to recovery mode through the OS
2. I boot to fastboot trough the OOS stock recovery
3. I try to flash TWRP to erase the system
4. Flashing works, but I can no longer boot into recovery mode
5. I have a bootloop (fastboot mode only)
6. I have to use that msmtool
7. I have some old OOS (9.5.5 or something)
8. I unlock the bootloader through the OS & fastboot
9. I boot into TWRP, delete everything and flash another ROM
10. Everything works and the cicle begins again
I really don't know why I'm always stuck in that bootloop... Maybe you guys could help me and give me your personal opinion on the slot system?
Click to expand...
Click to collapse
Doing it wrong.
If you are currently rooted and a new OS comes out you can do the following and you don't need to flash with TWRP or use a computer.
1. Download the full OTA. You can use Oxygen updater to do that or use a link in the stock ROM section on this site.
2. Make sure you have the Magisk and the TWRP zip on the phone.
3. Do a local update in the system area but do not reboot.
4. Launch Magisk manager and select install.
5. Use the OTA install option to inactive slot.
6. Now you can reboot. You have installed the new OS and root also.
7. Once rebooted do another local install. This will install in the slot that you were just running. It will fail the first time, but work the second time.
8. Repeat 4.
9. Repeat 5.
10 . Repeat 6.
You now have both slots with the same OS and rooted.
If you want to install TWRP.
Launch Magisk and install the TWRP zip.
Reboot into recovery. This is important because you cannot boot in slot with TWRP unless Magisk in installed.
Now flash the Magisk image file.
Now in TWRP select the other slot and reboot into recovery.
In recovery install Magisk image to this slot.
Now you have TWRP and Magisk in both slots.
I have done it that way since 9.5.7 and have not had an issue.
tech_head said:
Doing it wrong.
If you are currently rooted and a new OS comes out you can do the following and you don't need to flash with TWRP or use a computer.
1. Download the full OTA. You can use Oxygen updater to do that or use a link in the stock ROM section on this site.
2. Make sure you have the Magisk and the TWRP zip on the phone.
3. Do a local update in the system area but do not reboot.
4. Launch Magisk manager and select install.
5. Use the OTA install option to inactive slot.
6. Now you can reboot. You have installed the new OS and root also.
7. Once rebooted do another local install. This will install in the slot that you were just running. It will fail the first time, but work the second time.
8. Repeat 4.
9. Repeat 5.
10 . Repeat 6.
You now have both slots with the same OS and rooted.
If you want to install TWRP.
Launch Magisk and install the TWRP zip.
Reboot into recovery. This is important because you cannot boot in slot with TWRP unless Magisk in installed.
Now flash the Magisk image file.
Now in TWRP select the other slot and reboot into recovery.
In recovery install Magisk image to this slot.
Now you have TWRP and Magisk in both slots.
I have done it that way since 9.5.7 and have not had an issue.
Click to expand...
Click to collapse
Irrelevant ISH, but ever had that one bootloop where it only bootloops at the "Warning Bootloader unlocked screen" constantly? When I try to access fastboot, it'll just go straight to recovery without even waiting for input (to my luck, of course, until I had to uninstall magisk in full, reinstall, make sure TWRP was reflashed and did the "Fix recovery bootloop", though that wasn't the seemingly the issue). The issue got resolved, but it was very scary for that to have happened as soon as i enabled sudohide (I always had it work, but with huge problems, but never enough to bootloop me to death)
JhinCuatro said:
Irrelevant ISH, but ever had that one bootloop where it only bootloops at the "Warning Bootloader unlocked screen" constantly? When I try to access fastboot, it'll just go straight to recovery without even waiting for input (to my luck, of course, until I had to uninstall magisk in full, reinstall, make sure TWRP was reflashed and did the "Fix recovery bootloop", though that wasn't the seemingly the issue). The issue got resolved, but it was very scary for that to have happened as soon as i enabled sudohide (I always had it work, but with huge problems, but never enough to bootloop me to death)
Click to expand...
Click to collapse
If you install TWRP on a 7 Pro without installing Magisk you will absolutely boot loop. If you wipe the system in one slot and have a differing ROM from the active slot you can in fact boot loop. Although the systems are different, the settings between the systems are shared.
Sorry to say, but nothing about those steps is correct. Follow some guides in the guides section to get aquatinted with the A/B system
Arden144 said:
Sorry to say, but nothing about those steps is correct. Follow some guides in the guides section to get aquatinted with the A/B system
Click to expand...
Click to collapse
You are absolutely incorrect.
When going from 9.5.10 to 9.5.11 and all my previous upgrades it has been:
1. Local install of the new OS with a full OTA since I am rooted.
2. Do not reboot.
3. Install Magisk to inactive slot.
4. Reboot (Slot will automatically switch to the one recently updated).
5. Local install of OS into the other slot, fails first time, do it again.
6. Install Magisk into inactive slot.
7. Reboot. (Slot will switch to recently updated slot).
8. Both slots now have latest OS and are rooted.
You can also install TWRP if you like.
No computer needed.
This works.
tech_head said:
You are absolutely incorrect.
When going from 9.5.10 to 9.5.11 and all my previous upgrades it has been:
1. Local install of the new OS with a full OTA since I am rooted.
2. Do not reboot.
3. Install Magisk to inactive slot.
4. Reboot (Slot will automatically switch to the one recently updated).
5. Local install of OS into the other slot, fails first time, do it again.
6. Install Magisk into inactive slot.
7. Reboot. (Slot will switch to recently updated slot).
8. Both slots now have latest OS and are rooted.
This works.
Click to expand...
Click to collapse
That's completely unnecessary and just avoiding the purpose of the a/b system.
All it would take is:
1. Local install
2. Install magisk to inactive slot
Hi all,
update: I made update at the end.
My OP7 version is GM1900, so far I was on build 10.0.6GM57BA with Magisk 20.4, but for some time I had 10.0.8 update notification.
Today I decided to update build.
I consider myself as medium experienced user the type that is using rather step by step guides.
But this time I thought I don't need guide cause I should remember how I did update last time. In the meantime I help my son to make homework what was an additional distraction.
I always download full OTA from oneplus.com support but it turned out there was no 10.0.8 (instead there was/is 10.0.7). So I tried to search for 10.0.8 and I found this xda news. As there is a mess with versions and links and I was doing it on mobile Chrome I accidentally tapped Global/India Full OTA
Steps I made:
1.1. Downloading file OnePlus7Oxygen_14.P.29_OTA_029_all_2009152124_ba2424a.zip
1.2. Downloading official TWRP twrp-installer-3.4.0-0-guacamole.zip
1.3. Boot into TWRP.
1.4. Flash twrp-installer-3.4.0-0-guacamole.zip
1.5. Restart to TWRP
1.6. Flash magisk uninstall
1.7. Flash 10.3.5 (India & Global) - OnePlus7Oxygen_14.P.29_OTA_029_all_2009152124_ba2424a.zip
1.8. Flash magisk 20.1 (but forgot to reboot after flashing TWRP it was first mistake I think)
1.9. Ended with 10.3.5 (India & Global) build with stock recovery and without Magisk.
Next I tried to return to GM57BA.
Then the steps I made:
2.1. Downloading official build 10.0.7.GM57BA from oneplus support site.
2.2. Downloading Mauronofrio's TWRP twrp-3.4.0-0-guacamole-unified-Q-mauronofrio.img and twrp-3.4.0-0-guacamole-unified-installer-mauronofrio.zip
2.3. Boot OP7 into fastboot then command "fastboot boot twrp-3.4.0-0-guacamole-unified-Q-mauronofrio.img"
2.4. After phone booted into TWRP I flashed twrp-3.4.0-0-guacamole-unified-installer-mauronofrio.zip
2.5. Restart to TWRP
2.6. Flashed magisk uninstall.
2.7. Flashed 10.0.7.GM57BA
2.8. Flashed magisk 20.4
2.9. Only then I rebooted to TWRP (I think it was mistake).
2.10. Then I saw first problem - there was no lockscreen security with TWRP (unlock pattern).
2.11. Restarted to TWRP again - the same no unlock pattern screen, no access to data partition
2.12. I started to panic and restarted into system.
2.13. I ended with hard bootloop - I mean I can't even do force reset (force reboot) by pressing and holding the Power and Volume down buttons at the same time :crying:
I'm sorry for this long description but I thought it will be helpful to diagnose what I messed up.
Questions and my thoughts:
1. Did I messed up by not restarting after last magisk flash?
2. What to do now? Do I need to wait for battery discharge? Then unbrick using MSM tool?
3. Is there any chance to repair and preserve personal data? I have TWRP backup about 3 months old. Maybe after battery discharge I should go to TWRP and then sideload this backup? Maybe magisk uninstall or stock boot image flash?
Please help
Update:
After battery discharge I managed to boot into TWRP recovery (Mauronofrio's 3.4.0.0)
Then couldn't access /data
But when I switched to Slot B and reboot to recovery situation is back to normal (I guess).
I'm still in recovery scared to boot into system.
What to do now?
kold11 said:
Hi all,
update: I made update at the end.
My OP7 version is GM1900, so far I was on build 10.0.6GM57BA with Magisk 20.4, but for some time I had 10.0.8 update notification.
Today I decided to update build.
I consider myself as medium experienced user the type that is using rather step by step guides.
But this time I thought I don't need guide cause I should remember how I did update last time. In the meantime I help my son to make homework what was an additional distraction.
I always download full OTA from oneplus.com support but it turned out there was no 10.0.8 (instead there was/is 10.0.7). So I tried to search for 10.0.8 and I found this xda news. As there is a mess with versions and links and I was doing it on mobile Chrome I accidentally tapped Global/India Full OTA
Steps I made:
1.1. Downloading file OnePlus7Oxygen_14.P.29_OTA_029_all_2009152124_ba2424a.zip
1.2. Downloading official TWRP twrp-installer-3.4.0-0-guacamole.zip
1.3. Boot into TWRP.
1.4. Flash twrp-installer-3.4.0-0-guacamole.zip
1.5. Restart to TWRP
1.6. Flash magisk uninstall
1.7. Flash 10.3.5 (India & Global) - OnePlus7Oxygen_14.P.29_OTA_029_all_2009152124_ba2424a.zip
1.8. Flash magisk 20.1 (but forgot to reboot after flashing TWRP it was first mistake I think)
1.9. Ended with 10.3.5 (India & Global) build with stock recovery and without Magisk.
Next I tried to return to GM57BA.
Then the steps I made:
2.1. Downloading official build 10.0.7.GM57BA from oneplus support site.
2.2. Downloading Mauronofrio's TWRP twrp-3.4.0-0-guacamole-unified-Q-mauronofrio.img and twrp-3.4.0-0-guacamole-unified-installer-mauronofrio.zip
2.3. Boot OP7 into fastboot then command "fastboot boot twrp-3.4.0-0-guacamole-unified-Q-mauronofrio.img"
2.4. After phone booted into TWRP I flashed twrp-3.4.0-0-guacamole-unified-installer-mauronofrio.zip
2.5. Restart to TWRP
2.6. Flashed magisk uninstall.
2.7. Flashed 10.0.7.GM57BA
2.8. Flashed magisk 20.4
2.9. Only then I rebooted to TWRP (I think it was mistake).
2.10. Then I saw first problem - there was no lockscreen security with TWRP (unlock pattern).
2.11. Restarted to TWRP again - the same no unlock pattern screen, no access to data partition
2.12. I started to panic and restarted into system.
2.13. I ended with hard bootloop - I mean I can't even do force reset (force reboot) by pressing and holding the Power and Volume down buttons at the same time :crying:
I'm sorry for this long description but I thought it will be helpful to diagnose what I messed up.
Questions and my thoughts:
1. Did I messed up by not restarting after last magisk flash?
2. What to do now? Do I need to wait for battery discharge? Then unbrick using MSM tool?
3. Is there any chance to repair and preserve personal data? I have TWRP backup about 3 months old. Maybe after battery discharge I should go to TWRP and then sideload this backup? Maybe magisk uninstall or stock boot image flash?
Please help
Update:
After battery discharge I managed to boot into TWRP recovery (Mauronofrio's 3.4.0.0)
Then couldn't access /data
But when I switched to Slot B and reboot to recovery situation is back to normal (I guess).
I'm still in recovery scared to boot into system.
What to do now?
Click to expand...
Click to collapse
To force restart I need to use power button and both volume keys..
To keep TWRP you need to flash rom, then without restart flash TWRP again, then restart TWRP, then flash Magisk.
Likely the r reason why your system doesn't boot is because it can't decrypt your data.
Why this happens I don't know, maybe in the upgrade they changed something related to the exception and then by downgrading again it isn't able to read it anymore.
I would suggest to:
Flash the latest rom.
Flash TWRP
Reboot TWRP
If TWRP then doesn't ask for PIN or password, then I'm afraid you have lost your data. I hope you have a backup.
I'm that case format (not just clear) data -> yes
Reboot TWRP
Then flash Magisk.
Thanks for reply.
Like I wrote in update after changing slot to b I managed to run TWRP with decrypted data, made even new new backup.
I also restarted into system and it occurs I'm still 10.3.5 (India & Global) GM57AA, so everything I flashed in with build 10.0.7.GM57BA was unsuccessful.
I think I messed with changing inactive slot procedure. Noob mistake I need to read about it.
kold11 said:
Thanks for reply.
Like I wrote in update after changing slot to b I managed to run TWRP with decrypted data, made even new new backup.
I also restarted into system and it occurs I'm still 10.3.5 (India & Global) GM57AA, so everything I flashed in with build 10.0.7.GM57BA was unsuccessful.
I think I messed with changing inactive slot procedure. Noob mistake I need to read about it.
Click to expand...
Click to collapse
I would suggest do restore your device with msm unbrick tool.
1. From recovery, turn off (i noticed, that when tried to turn off from somewhere else, the device would auto reboot later in downlaod mode)
2. In windows, turn off the connection & open device manager: Get this driver http://download.windowsupdate.com/c..._fba473728483260906ba044af3c063e309e6259d.cab
3. Press volume/down + volume/up, after about 5s connect to pc
4. Your device should show up in device manager, open it and install the driver manuell from step 2 (keep device options open... if fail you need to uninstall the driver before trying again)
5. Now wait for about 40s, if your device stays in download mode, you can open & start the msm tool (leave the options in msm as they are)
6. It will take about 280s, then the device will reboot.... (its normal that it stays longer at the oneplus logo at first start)
MSM Thread: https://forum.xda-developers.com/oneplus-7/how-to/op7-unbrick-tool-to-restore-device-to-t3954325
I've also uploaded the 10.0.5OOS Unbrick tool on mega, because android file hosted downloads are so terrible: https://mega.nz/file/ArZFkYpS#Z_rOIwZeYN27IG6L8rOi-yfw8wXGiwvK-uWVDlsmvTI
Hello everyone! Thanks in advance for taking a look at this thread.
I recently upgraded from a Pixel 2 to a Pixel 5 and decide to root my old phone and mess around with that before doing the same with my new phone. It's been several years since I've messed around with rooting a device, so I've spent some time this week refreshing myself on how to do so.
I've already unlocked my bootloader, but the main issue that I'm running into is when I try to install TWRP or Magisk. For some reason, when I try to flash TWRP (version 3.3.0.0), I've managed to install it properly but loading into recovery mode just leaves me stuck at the TWRP splash screen, while booting directly into it doesn't allow me to backup my data (kicking out an error 255 each time). It would be nice to have TWRP to be able to back up rather than starting from scratch each time, even if I've gotten quick at flashing the stock image when I screw up later.
As for Magisk, I've tried flashing the patched boot image through TWRP and received errors (size of image is larger than target device) as well as the .zip file which just caused a bootloop. I know you can install Magisk without TWRP, so I've tried doing that as well. I've been working with both Magisk 23.0 and the Canary build with no luck; after patching the boot image and attempting to flash it using fastboot flash boot magisk_patched.img, I just repeatedly get an error showing "FAILED (remote: 'Error flashing partition')".
So far I've not really been able to find any solutions on how to fix this, so I feel a bit stuck at this point (and definitely questioning my ability to just follow directions). Any advice on how I might get around these errors?
Hello mate,
With regards to installing twrp, I think there is a workaround in the official twrp thread to get twrp installed with working decryption and working pin by rolling back to a pie build prior to encryption being broken for twrp. Personally I just fastboot it when needed to flash anything but sadly twrp back ups don't work (I'm on A11).
It sounds as if you have tried to install magisk a few ways but I found the simplest way was to install the latest magisk.apk then rename it to magisk.zip and flash it via fasbooted twrp.
It sounds as if you tried patching the image etc so may pay to reflash the stock boot.img and then do the APK/zip method to get magisk running.
Lastly, if you don't mind losing your data it may well pay to reflash a full stock.img and then try magisk again. It's solved a few dramas for me when stuff didn't seem to work first time round.
Hello all,
Everything was working on my rooted oneplus 7 pro, until I applied the latest OTA update. Once that was installed and the phone rebooted, my once working mobile network was no longer working. The phone says no sim card detected and every few seconds the default phone app displays the force close crash dialog. Has anyone else encountered this issue? It looks like rolling it back to the previous OxygenOS version is the only solution, but I'm not quite sure how to go about that safely. Any help would be greatly appreciated.
The device is using Magisk and TWRP
I also tried uninstalling Magisk, but that did not resolve the issue.
Have you tried just doing a reset in settings?
.This is how I install stock oos
You can use MSM tool to revert OOS, or you can try this step:
1. Reboot twrp/lineage recovery, format data. Reboot bootloader
2. Fastboot boot into TWRP FBEv2
3. Sideload official TWRP 3.5.2.9-0 installer (found on TWRP website). Reboot recovery
4. Copy OOS 11.zip to internal storage,or copy to otg drive,Flash OOS 11.zip. Reboot recovery again
5. Format data in OOS stock recovery & Reboot
6. After boot into OOS 11, just local upgrade rom .zip again, you will have OOS on both slots
7. If root is needed fastboot flash magisk patched boot.img
I'll give that a shot today. Do you have the links to MSM and OOS11.zip ? Thanks
ChimmyChanga said:
I'll give that a shot today. Do you have the links to MSM and OOS11.zip ? Thanks
Click to expand...
Click to collapse
Index of /list/Unbrick_Tools
I don't have the oos 11 off hand , I know you can download the latest and greatest directly from OnePlus website under support
I have the same problem i cant do nothing
No SIM card, or No network available -- Any help would be kind and appreciated.
At the start:
Oneplus 7 pro - GM1915 /US- active t-mob sim
LOS 18.1 (latest)
magisk 22.x upgraded along the way to current magisk 25.2, 8.0.7 app
Running LOS recovery ##// no issues since 18.1 came out
USB 2.0 port(s), good'ol red/white cable(s). ##// verified cables/ ports.. typical troubleshooting to rule them out)
Current Platform tools in $PATH
Issue. No SIM card.
Steps to masonry school:
I upgraded my LOS 18.1(magisk 25.2 persistent) to oos 12, then went to LOS 19.1. The update(s) went fine, or so it seemed... Booted fine. Still rooted. All's good until reboot. Then no SIM card found.
Mess around with turning off wi-fi, nfc, mobile data turn on airport mode... all iterations of that..
Occasionally it saw the sim card! Says, "Network unavailable." Shows T-mob on sim 1... Thinks it has 2 sim cards... ##// can't help but think this might be something
Set APN T-mob blah blah... wait.. go to local t-mob verify my sim is provisioned properly get new sim..
Their take is(of course) it's time to upgrade lol... Got a spare $800 laying around? If not, you can pay for it after there is no longer a recession lol... I digress(in distress)
##//
I started having worse problems upon performing the next 19.1 LOS_11-13-22 ota.
Immediately I got into a bootloader loop. I first tried my patched_110622-LOS_boot.img and got nothing but a seemingly successful boot, then those lovely "Power Off" words and back to bootloader.
Once back in fastboot I changed partitions(keep in mind I have not flashed anything to alter the LOS 19.1 boot restructuring at this point. Reboot. Same outcome. Bootloader loop. Booting to recovery, start, power off or bootloader all do the same thing... quickly reboot into bootloader.
I then decided to boot to twrp. I went ahead and did this
#>/ fastboot getvar all ###/// yielding partition a
#>/ fastboot flash boot_a twrp.img
#>/ fastboot boot twrp.img
The screen goes to "fastboot mode" and hangs. power+up_vol & it finally boots into twrp.
I then twrp installed the LOS update, which lead to more bootloops. Various dalvik cache/data and cache wipes after flashing, factory reset won't complete the reset... I have exhausted my limits of attempts at this point, so off to MSM I am.
All versions/drivers correct. On a win10Px64 now. Connects fine.
Now this is where it gets odd(to me anyway). I tried to go to stock oxy10, for GM1911AA and it hangs on the param preload. Something I don't remember seeing since 2020'ish. Tried multiple firmware until it took one, that was H.30. Successfully flashed. Booted. Found SIM card. Thought that was it.. Then I unplugged my usb cable from the op7p and *poof * reboot. After much digging and changing metedata preloads, various things to try to get this thing to work.
Current:
I can get it to run LOS 19.1 No SIM card found. Rooted with twrp and magisk no prob.
Just can't get it to work with the SIM, whether seen or not.
I am suspicious that I should have used H.31 for the MSM... however now it won't get past param preload with anything earlier than 11.5.1 Oxy 12. Also, I even went so far as to try flashing the CB firmware variant to see if it would take the T-mob firmware. Won't let me, says not compatible. So now I have a rooted op7pro that can only communicate via signal lol.. and not long at that...
Any thoughts/help/direction/suggestions, would be greatly appreciated.