How to go back to official firmware from PE 12 - OnePlus 8T Questions & Answers

Hello all, I need some help.
I am currently on Pixel Experience 12, with Pixel Experience Recovery, but there doesn't seem to be a way to upgrade directly to 13 (please do let me know if I'm wrong and there is a way).
Apparently I need to be on OOS 13, however I've only had OOS 11 on this phone.l and I think it's long gone.
How do I get back on stock (any version) safely? If possible, without MSM as I don't have easy access to a Windows PC (just Linux and Mac).
Thanks!

gongolino said:
Hello all, I need some help.
I am currently on Pixel Experience 12, with Pixel Experience Recovery, but there doesn't seem to be a way to upgrade directly to 13 (please do let me know if I'm wrong and there is a way).
Apparently I need to be on OOS 13, however I've only had OOS 11 on this phone.l and I think it's long gone.
How do I get back on stock (any version) safely? If possible, without MSM as I don't have easy access to a Windows PC (just Linux and Mac).
Thanks!
Click to expand...
Click to collapse
You can use fastboot enhance instead of MSM, but it'll require pc anyway.
Booting twrp or orangefox recovery and flashing stock oos .zip from it, comes to my mind as a possible solution to your issue, without requiring PC access.

Related

Removed OS, How do i reinstall the stock ROM?

Hello
First of all, let me explain the situation:
My phone is the Oneplus One, currently with no OS, the reason being - because i wanted to re-root my phone after the Oneplus updated (this update was a while ago) either way many problems occurred and i figured the easiest way to re-root my device is to simply wipe it, and try again on a clean slate.
I attempted to wipe my phone, but did it the complete wrong way. Instead of using the OS's wiping strategy, i may of used the recovery's one instead, doing so i clean swooped the OS right off my phone.
At the moment, the phone has no OS installed - nor is the phone rooted. The phone isn't capable of passing files over through usb debugging because the computer doesn't recognise it no more. (It did have usb debugging turn't on). Of course i need to reinstall an OS on the phone. The TWRP recovery is working fine. But i do not know how to do it. I looked up things such as mounting, didn't really understand the vague explanations given by the helpers of this forum (i am slow haha ). If someone is able to point me in the right direction in how to simply put an OS back into the phone some how i would be grateful.
I did read up on one post that suggested making a system.img placing the OS inside and flashing it over using fastboot mode. Which brings me to the question. Is it possible to use command to install an OS on my Oneplus whilst in fastboot mode?
RazorCJ123 said:
Hello
First of all, let me explain the situation:
My phone is the Oneplus One, currently with no OS, the reason being - because i wanted to re-root my phone after the Oneplus updated (this update was a while ago) either way many problems occurred and i figured the easiest way to re-root my device is to simply wipe it, and try again on a clean slate.
I attempted to wipe my phone, but did it the complete wrong way. Instead of using the OS's wiping strategy, i may of used the recovery's one instead, doing so i clean swooped the OS right off my phone.
At the moment, the phone has no OS installed - nor is the phone rooted. The phone isn't capable of passing files over through usb debugging because the computer doesn't recognise it no more. (It did have usb debugging turn't on). Of course i need to reinstall an OS on the phone. The TWRP recovery is working fine. But i do not know how to do it. I looked up things such as mounting, didn't really understand the vague explanations given by the helpers of this forum (i am slow haha ). If someone is able to point me in the right direction in how to simply put an OS back into the phone some how i would be grateful.
I did read up on one post that suggested making a system.img placing the OS inside and flashing it over using fastboot mode. Which brings me to the question. Is it possible to use command to install an OS on my Oneplus whilst in fastboot mode?
Click to expand...
Click to collapse
See section 8 of my guide:
http://forum.xda-developers.com/showthread.php?t=2839471

Qualcomm Crashdump

Hi all
I have just bought a new Oneplus 6 and wanted to install Lineage Os.
I had initially set up the OP6 with my google account and installed some minimum apps over a couple of days. The phone updated a couple of times. I think I started on Android 8, it definitely updated to Android 9 and I think it updated to Android 10. But I am not completely sure of this because I did not take notice at that stage because I didn't realise that this might have significance..
I followed the guide from the lineaoge os wiki here
wiki.lineageos.org/devices/enchilada[
I got as far as using adb to Fastboot boot twrp-3.3.1-2-enchilada.img (which was the latest image in the dl.twrp.me/enchilada/
It then got stuck in the qualcomm crashdump line on screen.
I spent a day checking posts, including here on XDA. There are a lot of posts dealing with this issue and I did try to follow some of them with less or more success but no resolve. I downloaded Android 9.02 and used the following instructions
techtrickz.com/how-to/recover-oneplus-6-and-6t-from-qualcomm-crashdump-mode/
The routine started to run and then posted a series of error messages and exited. ( I have a screenshot of the terminal window but cannot see a way to post it here)
I have tried to research this further and there are plenty of posts and lots of suggestions. But to be honest I have become confused as some of the posts give significantly different solutions to each other.
I wondered whether it would be possible to give me some help or point me in the right direction to a post which is current and has the steps that I am likely to need succeed..
Thanks in advance for any help you can give.
grego34 said:
Hi all
I have just bought a new Oneplus 6 and wanted to install Lineage Os.
I had initially set up the OP6 with my google account and installed some minimum apps over a couple of days. The phone updated a couple of times. I think I started on Android 8, it definitely updated to Android 9 and I think it updated to Android 10. But I am not completely sure of this because I did not take notice at that stage because I didn't realise that this might have significance..
I followed the guide from the lineaoge os wiki here
wiki.lineageos.org/devices/enchilada[
I got as far as using adb to Fastboot boot twrp-3.3.1-2-enchilada.img (which was the latest image in the dl.twrp.me/enchilada/
It then got stuck in the qualcomm crashdump line on screen.
I spent a day checking posts, including here on XDA. There are a lot of posts dealing with this issue and I did try to follow some of them with less or more success but no resolve. I downloaded Android 9.02 and used the following instructions
techtrickz.com/how-to/recover-oneplus-6-and-6t-from-qualcomm-crashdump-mode/
The routine started to run and then posted a series of error messages and exited. ( I have a screenshot of the terminal window but cannot see a way to post it here)
I have tried to research this further and there are plenty of posts and lots of suggestions. But to be honest I have become confused as some of the posts give significantly different solutions to each other.
I wondered whether it would be possible to give me some help or point me in the right direction to a post which is current and has the steps that I am likely to need succeed..
Thanks in advance for any help you can give.
Click to expand...
Click to collapse
I would recommend using fastboot flashable stock rom from here. People also like to use msmtool, but I feel like it is an overkill.
Please note this warning:
These ROMs can't be used to update or downgrade your phone but just to restore your phone, so don't use them to come back to oreo or to update from oreo to pie.
So grab the latest oxygen os 10, and follow the instructions to flash it. After that, if you are feeling a bit paranoid maybe download a zip from oneplus and do a local update. You now should have your phone back.
Official TWRP does not support android 10 yet, as far as I understand, so that is probably the issue. If you want lineageos 16, you should downgrade to android 9 using a downgrade package provided by oneplus and then update to Oxygen OS 9.0.9.
There is unofficial twrp by mauronofrio that supports android 10. If you want to go from OOS 10 to some other android 10 rom
[email protected] said:
I would recommend using fastboot flashable stock rom from here. People also like to use msmtool, but I feel like it is an overkill.
Please note this warning:
These ROMs can't be used to update or downgrade your phone but just to restore your phone, so don't use them to come back to oreo or to update from oreo to pie.
So grab the latest oxygen os 10, and follow the instructions to flash it. After that, if you are feeling a bit paranoid maybe download a zip from oneplus and do a local update. You now should have your phone back.
Official TWRP does not support android 10 yet, as far as I understand, so that is probably the issue. If you want lineageos 16, you should downgrade to android 9 using a downgrade package provided by oneplus and then update to Oxygen OS 9.0.9.
There is unofficial twrp by mauronofrio that supports android 10. If you want to go from OOS 10 to some other android 10 rom
Click to expand...
Click to collapse
Thanks very much for your helpful reply. I am now back to a working phone with Oxygen os10. And you have also explained what was wrong when I tried to fix it, I was trying to load an Oxygen Os 9 on a phone that had already been upgraded to 10 and you have explained what went wrong in the first place, I was trying to flash an incompatible TWRP image onto Android 10. So your short post has explained a lot. Thank you.
I am not feeling paranoid unless you advise that I should be and I do want to install lineage os. So I need to revert to Oxygen Os9. I have looked on the Oneplus site and that have found the option to Upgrade to 10.3 but no option to downgrade. In the Oneplus community there is a link to downloadable ROMs, these are divided into a number of folders some of which look not applicable. There are three folders that look of interest
1. Signed flashable zips
2. OTA incremental update zips
3. Stock boot-recovery images
Here is the link /forums.oneplus.com/threads/oneplus-6-rom-ota-oxygen-os-mirrors-for-official-oxygen-os-roms-and-ota-updates.835607/
I can see it is not the OTA Incremental that I need but am unsure if it is signed flashable zips or Stock boot recovery images. or whether it is neither.
Do I flash as normal or would it be a local update?
I would be grateful for any further advice.
Thanks again and for any help provided now.
grego34 said:
Thanks very much for your helpful reply. I am now back to a working phone with Oxygen os10. And you have also explained what was wrong when I tried to fix it, I was trying to load an Oxygen Os 9 on a phone that had already been upgraded to 10 and you have explained what went wrong in the first place, I was trying to flash an incompatible TWRP image onto Android 10. So your short post has explained a lot. Thank you.
I am not feeling paranoid unless you advise that I should be and I do want to install lineage os. So I need to revert to Oxygen Os9. I have looked on the Oneplus site and that have found the option to Upgrade to 10.3 but no option to downgrade. In the Oneplus community there is a link to downloadable ROMs, these are divided into a number of folders some of which look not applicable. There are three folders that look of interest
1. Signed flashable zips
2. OTA incremental update zips
3. Stock boot-recovery images
Here is the link /forums.oneplus.com/threads/oneplus-6-rom-ota-oxygen-os-mirrors-for-official-oxygen-os-roms-and-ota-updates.835607/
I can see it is not the OTA Incremental that I need but am unsure if it is signed flashable zips or Stock boot recovery images. or whether it is neither.
Do I flash as normal or would it be a local update?
I would be grateful for any further advice.
Thanks again and for any help provided now.
Click to expand...
Click to collapse
I have had luck with this downgrade package. I basically googled it, the package is hosted on a legitimate website, so that's what I used. Just download it, put it on your phone and do a local upgrade through updater app.
Once you have done that I would recommend upgrading to the latest Android 9, which is OOS version 9.0.9 I believe. Then go ahead and follow instructions to install lineageos.
I am actually on LineageOS 16 + MicroG right now, so I ran into the same problems you did Glad I could help!
TexnoViking said:
I have had luck with //oxygenos.oneplus.net/fulldowngrade_wipe_MSM_17819_181025_2315_user_MP1_release.zip" downgrade package. I basically googled it, the package is hosted on a legitimate website, so that's what I used. Just download it, put it on your phone and do a local upgrade through updater app.
Once you have done that I would recommend upgrading to the latest Android 9, which is OOS version 9.0.9 I believe. Then go ahead and follow instructions to install lineageos.
I am actually on LineageOS 16 + MicroG right now, so I ran into the same problems you did Glad I could help!
Click to expand...
Click to collapse
Thanks so much for your reply again.
I used your downgrade link and that all worked well and then let it upgrade to OOS 9.0.9. Again all very positive.
I then tried to flash TWRP to the device using this image "twrp-3.3.1-2-enchilada.img" It appeared to flash okay. Then I issued the command
"fastboot boot twrp-3.3.1-2-enchilada.img" over my adb connection and it returned to the Qualcomm Crashdump error.
I presume I have to start again with the exception that this time I can use a flashable stock rom that is OOS 9.09? Is that correct?
Then do you have any suggestions for getting round the TWRP problem? Did you use a different version?
Thanks in advance for any help.
grego34 said:
Thanks so much for your reply again.
I used your downgrade link and that all worked well and then let it upgrade to OOS 9.0.9. Again all very positive.
I then tried to flash TWRP to the device using this image "twrp-3.3.1-2-enchilada.img" It appeared to flash okay. Then I issued the command
"fastboot boot twrp-3.3.1-2-enchilada.img" over my adb connection and it returned to the Qualcomm Crashdump error.
I presume I have to start again with the exception that this time I can use a flashable stock rom that is OOS 9.09? Is that correct?
Then do you have any suggestions for getting round the TWRP problem? Did you use a different version?
Thanks in advance for any help.
Click to expand...
Click to collapse
Hm. Yes, unfortunately the safest thing to do is to start again. But you can start with 9.0.9 right away.
People have been discussing a similar issue here. It seems like using unofficial twrp by blu_spark helps. Maybe twrp-3.2.3-x_blu_spark_v9.91_op6.img or maybe try the latest one.
Also, make sure you read the instructions on lineageos website. Make sure you have oem unlocked, usb debugging enabled and you clicked "always give access to this" device or something, do the fastboot set_active a. I have also used fastboot flash boot_a <recovery_filename>.img. However, I do recall using fastboot boot <recovery_filename>.img some other time and I think it worked....
Anyway, yeah, maybe try this modified recovery by blu spark and follow the instructions carefully.
TexnoViking said:
Hm. Yes, unfortunately the safest thing to do is to start again. But you can start with 9.0.9 right away.
People have been discussing a similar issue here. It seems like using unofficial twrp by blu_spark helps. Maybe twrp-3.2.3-x_blu_spark_v9.91_op6.img or maybe try the latest one.
Also, make sure you read the instructions on lineageos website. Make sure you have oem unlocked, usb debugging enabled and you clicked "always give access to this" device or something, do the fastboot set_active a. I have also used fastboot flash boot_a <recovery_filename>.img. However, I do recall using fastboot boot <recovery_filename>.img some other time and I think it worked....
Anyway, yeah, maybe try this modified recovery by blu spark and follow the instructions carefully.
Click to expand...
Click to collapse
Thanks very much for your helpful reply and apologies for the delay in my reply to this post, I have been tied up with work the last couple of days.
I did re-install OOS 9 and then followed the instructions on the Team Win site to install TWRP in the Oneplus6. I had success after I used the latest TWRP image and zip from that site . I was then able to install Lineage OS and Microg as I wished.
So thanks for the help all. Really appreciated.
grego34 said:
Thanks very much for your helpful reply and apologies for the delay in my reply to this post, I have been tied up with work the last couple of days.
I did re-install OOS 9 and then followed the instructions on the Team Win site to install TWRP in the Oneplus6. I had success after I used the latest TWRP image and zip from that site . I was then able to install Lineage OS and Microg as I wished.
So thanks for the help all. Really appreciated.
Click to expand...
Click to collapse
Great! I am glad you managed to fix your phone! Enjoy

Question Recovery and Rooting

I am coming from a OnePlus 5, I literally just got my hands on OnePlus 9 a couple of hours ago. It looks like a few things has changed and things are not as straight forward as flashing a zip file in TWRP. I have been reading through a few things and just want to ask some questions.
Is TWRP even needed anymore? Most instructions on flashing roms is done via sideloading and booting into recovery via fastboot (some requires OSS while others LOS recovery).
What is the easiest way to root (on OSS 12)? Seems to be a good mixture of different ways to root and reading comments does not make it any easier, if anything even more confusing.
Which OnePlus 9 do you have? I'm assuming you're on global OOS 12 as I don't think 12 has come to the T-Mobile variant officially, but I wanted to double check and see if I could point you in the right direction.
posar said:
Which OnePlus 9 do you have? I'm assuming you're on global OOS 12 as I don't think 12 has come to the T-Mobile variant officially, but I wanted to double check and see if I could point you in the right direction.
Click to expand...
Click to collapse
I got the 2115 model, I believe that is global. Can you not just flash ROMs in TWRP anymore? I see all of the ROMs requires sideload which means you need a computer. I am a bit of a flashaholic and even though sideload is not a big issue.
Z-Blade said:
I got the 2115 model, I believe that is global. Can you not just flash ROMs in TWRP anymore? I see all of the ROMs requires sideload which means you need a computer. I am a bit of a flashaholic and even though sideload is not a big issue.
Click to expand...
Click to collapse
Not really, unfortunately. For most ROMs, it seems you have to go to the most recent version of OOS 11 and then flash from there.
posar said:
Not really, unfortunately. For most ROMs, it seems you have to go to the most recent version of OOS 11 and then flash from there.
Click to expand...
Click to collapse
That is unfortunate. I got root going on OSS 12 but at this point I don't really see a reason to flash TWRP since the recommended way to flash custom ROMs is different. I hope all of the Devs ends up following a particular standard.
Z-Blade said:
That is unfortunate. I got root going on OSS 12 but at this point I don't really see a reason to flash TWRP since the recommended way to flash custom ROMs is different. I hope all of the Devs ends up following a particular standard.
Click to expand...
Click to collapse
Yeah, it seems as if the simple TWRP days are over, at least for OnePlus. Maybe someone smarter than me will get it working flawlessly.
Z-Blade said:
That is unfortunate. I got root going on OSS 12 but at this point I don't really see a reason to flash TWRP since the recommended way to flash custom ROMs is different. I hope all of the Devs ends up following a particular standard.
Click to expand...
Click to collapse
Can you tell me how did you obtain root on OSS 12? I tried severalmethods but ended up with errors an even some soft-bricked times. As you stated in the 1st message, there is plenty of ways around the internet and comments making it really confusing.
JustLeoSC said:
Can you tell me how did you obtain root on OSS 12? I tried severalmethods but ended up with errors an even some soft-bricked times. As you stated in the 1st message, there is plenty of ways around the internet and comments making it really confusing.
Click to expand...
Click to collapse
I downloaded the patched boot.img from the link below and I recommend you also down the normal stock boot.img as well.
[DISCONTINUED][OOS & PA] OnePlus 9 stock/patched boot images
Now as we have TWRP for any A11-13 ROMs, there's no need for boot image patching, just flash magisk in TWRP. Hi! There's a great root guide here on xda by @zymphad and i thought i'd share the boot images for different OOS and Paranoid Android...
forum.xda-developers.com
In that thread there is a link to a 'Great root guide', I used that root guide and the patched boot.img to root Android 12.
Nice! After several tries, some softbricks and a lot of haste for the different methos I finally got it rooted. Thank you man, it worked like a charm!

Question Some problems with this mobile

Hello everyone, since I have this mobile I have some problems. When paying with the phone, most of the time the NFC gives me an error and I have to try a thousand times. And the worst of all is that when I open the gallery or the camera, the brightness goes down to the minimum. Has anyone had these problems and solved them? Thank you very much.
Don't use stock rom, flash xiaomi.eu. It's way better than what xiaomi ships their phones with.
I had that issue with the stock, theirs a big list of bugs. I'm on xioami.eu 13.0.13 (recent as of this comment)
and all those are gone, except the phone bug where you have to answer in speaker mode once on, and off to fix it.
also the lockscreen video wallpaper doesn't loop, and stops playing after a while.
this is where the rom is,
https://xiaomi.eu/community/threads/22-6-8-6-9.66076/ (super easy to flash)
if you're lost just follow this
Installing MIUI EU ROM and root
Hi all, thought I would post a simple guide for people who are wanting to get some customisation on their ROMs and install root. First off - as of this post there's no working twrp/orangefox for this device and as far as I'm aware android 12...
forum.xda-developers.com
Vincent Foxx said:
Don't use stock rom, flash xiaomi.eu. It's way better than what xiaomi ships their phones with.
I had that issue with the stock, theirs a big list of bugs. I'm on xioami.eu 13.0.13 (recent as of this comment)
and all those are gone, except the phone bug where you have to answer in speaker mode once on, and off to fix it.
also the lockscreen video wallpaper doesn't loop, and stops playing after a while.
this is where the rom is,
https://xiaomi.eu/community/threads/22-6-8-6-9.66076/ (super easy to flash)
if you're lost just follow this
Installing MIUI EU ROM and root
Hi all, thought I would post a simple guide for people who are wanting to get some customisation on their ROMs and install root. First off - as of this post there's no working twrp/orangefox for this device and as far as I'm aware android 12...
forum.xda-developers.com
Click to expand...
Click to collapse
Thank you very much. I forgot to mention that my mobile is Poco x4 pro 5g. I have a Mac, and I don't know how to change the rom, the tools are for Windows.
Jorgelopezortiz74 said:
Thank you very much. I forgot to mention that my mobile is Poco x4 pro 5g. I have a Mac, and I don't know how to change the rom, the tools are for Windows.
Click to expand...
Click to collapse
XiaomiFlashTool V2 exists for all operating systems. You can also just use a vm to do this on your mac. Just pass your phone in after booting to fastboot and ensure you have fastboot drivers installed on your mac.
KHSH01 said:
XiaomiFlashTool V2 exists for all operating systems. You can also just use a vm to do this on your mac. Just pass your phone in after booting to fastboot and ensure you have fastboot drivers installed on your mac.
Click to expand...
Click to collapse
Xiaomi Flash Tool V2 is it safe to flash a rom on a device, or there is a lot of risk of bricking
Jorgelopezortiz74 said:
Xiaomi Flash Tool V2 is it safe to flash a rom on a device, or there is a lot of risk of bricking
Click to expand...
Click to collapse
As long as you get the right rom file it is fine. So triple check and ensure that you downloaded the right rom.
KHSH01 said:
As long as you get the right rom file it is fine. So triple check and ensure that you downloaded the right rom.
Click to expand...
Click to collapse
According to the colleague, the Xiaomi.eu rom has a bug when picking up the call. I don't know if that will be solved with the following updates, that's why I'm afraid to download that rom and that to solve the brightness it could spoil another function of the mobile.
Jorgelopezortiz74 said:
According to the colleague, the Xiaomi.eu rom has a bug when picking up the call. I don't know if that will be solved with the following updates, that's why I'm afraid to download that rom and that to solve the brightness it could spoil another function of the mobile.
Click to expand...
Click to collapse
Upto you whether you want to do or not. I won't be able to flash anything until my bootloader unlocks so I don't know what the differences between the roms are.

Question How do I downgrade to Android 11

I'm having difficulties running a lot of games after downloading android 12, and I'd like to return to android 11 but I don't know how, when I try to go into fastboot it just restarts the phone
OnePlus Community
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community.oneplus.com
rexammus said:
I'm having difficulties running a lot of games after downloading android 12, and I'd like to return to android 11 but I don't know how, when I try to go into fastboot it just restarts the phone
Click to expand...
Click to collapse
Did you find a solution? I'm trying to downgrade too but none of the rollback files work for my model. (IV2201). I don't even know if I have the IN, EU or GLO version to be honest.
Trying to boot into fastboot mode just restarts my phone too.
I guess we have to just wait for another update that hopefully fixes fastboot.
/delete

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