[Q] Help needed in relocking the bootloader - Xiaomi Mi A1 Questions & Answers

Hi,
Sometime back I unlocked the boot loader, used magisk to enable the camera2 api. After that I uninstalled magisk and tried to reloack the bootloader. Everything went inorder until I tried to relock the bootloader. But once I typed in the command to relock the bootloader, and restarted, the mobile showed something like, no os found or something like that, I don't remember correctly. Anyway I was not able to boot into the system. So I unlocked the bootloader again and flashed the patched boot image and did it all over again.
So now, my mobile is unlocked, but is working fine. Is there anyway I can reloack it without any issues?
I read something like, if I had changed anything in the system partition this might happen. But that was the reason I used magisk instead of editing the file. Magisk plugin just changes a variable instead of editing the build props file. So until I reset the device, the camera2 api will be enabled without changing any files in the system partition. But still the reloacking fails. So what could be the problem here?

Locking the bootloader will fail if the boot image is not changed back to the original unpatched one. Maybe the uninstall didn't run properly.
You do not need magisk to enable the camera2api attribute, just an adb command is needed. The magisk module method is just easier for noobs.

You can manually add the lines to enable camera2api and eis in build.prop
You can do that and relock the bootloader normally

berezker said:
You can manually add the lines to enable camera2api and eis in build.prop
You can do that and relock the bootloader normally
Click to expand...
Click to collapse
barrack1 said:
Locking the bootloader will fail if the boot image is not changed back to the original unpatched one. Maybe the uninstall didn't run properly.
You do not need magisk to enable the camera2api attribute, just an adb command is needed. The magisk module method is just easier for noobs.
Click to expand...
Click to collapse
What about the OTA updates? Will I be getting that if I changed the build.props file?
Because the way with magisk helps me get all the OTA updates. I just got one yesterday. I don't want to lose this. I read somewhere that editing any files in the system partition will stop receiving the OTA updates.

obscurant1st said:
What about the OTA updates? Will I be getting that if I changed the build.props file?
Because the way with magisk helps me get all the OTA updates. I just got one yesterday. I don't want to lose this. I read somewhere that editing any files in the system partition will stop receiving the OTA updates.
Click to expand...
Click to collapse
OTA will not work if any file on the /system including build.prop is changed.
All that is needed to enable gcam on this particular device is to enable the api through adb commands which does not change the system partition.

obscurant1st said:
What about the OTA updates? Will I be getting that if I changed the build.props file?
Because the way with magisk helps me get all the OTA updates. I just got one yesterday. I don't want to lose this. I read somewhere that editing any files in the system partition will stop receiving the OTA updates.
Click to expand...
Click to collapse
OTA will not work if any file on the /system including build.prop is changed.
All that is needed to enable gcam on this particular device is to enable the api through adb commands which does not change the system partition.

Related

Android Pay Compatibility?

Hi,
Wondering if anyone has succeeded in using Android Pay on their Mi Note 2?
I have the bootloader unlocked on mine and while I've had a play with Magisk and such, unsurprisingly since the bootloader is unlocked I'm not getting anywhere.
I'm aware there are kernel hacks that can return support to unlocked devices but I'm having a hard time telling if I'd require the full kernel source in order to implement them or if there are any other ways around this or if it is simply to MIUI being an unsupported ROM. I have heard that running stock MIUI with a an originally locked bootloader still fails SafetyNet and is incompatible. With the difficulties Xiaomi place on unlocking/relocking the bootloader etc
I was hoping someone who is still running stock would be able to verify it works on a stock device
If you could also post a screenshot of the ROM you're using that would be great. With so many devices shipping with vendor ROMs rather than the official it only complicates things further.
I'm happy to keep trying and post a tutorial for others if I can get it working but frankly at this stage if the issue is MIUI itself rather than the state of the bootlock then I'd rather not waste any more hours on this.
Cheers,
StoneTrap
Can confirm Android Pay works - I am using a rom provided by Hong Kong Goldway. I haven't rooted yet but I will see if it works afterwards.
thedeejay said:
Can confirm Android Pay works - I am using MIUI Global Stable 8.0.9.0.0. I haven't rooted yet but I will see if it works afterwards.
Click to expand...
Click to collapse
That's great to know.
I'm guessing your bootloader is still locked if you're unrooted. I'm fairly sure that's the only thing left tripping safetynet. AFAIK there's no bypass until we can build our own kernel but I'd love for someone to porve me wrong.
Did you try to lock bootloader again?
I think the Magisk trick is for hiding root, not unlocked bootloader.
terstor said:
Did you try to lock bootloader again?
I think the Magisk trick is for hiding root, not unlocked bootloader.
Click to expand...
Click to collapse
Thanks for the reply.
Like I said, I realise the issue is the unlocked bootloader. I know what Magisk is for
What I was asking is if a full kernel source is needed to build a hacked kernel that supports an unlocked bootloader meeting SafetyNet or if there are is any way of patching or rebuilding a pre-existing one?
There are already compatibility issues with some MIUI versions and Android Pay even with a locked bootloader. Rather than testing every rom myself I was wondering if anyone here had any experience with it working on a certain rom.
I know that you know
I'm just curious if android pay will work again if you lock bootloader again for example using 'fastboot oem lock'.
If someone is unlocking bootloader to install custom recovery only, it would be good idea to unlock -> install recovery -> lock -> install android Pay.
But does anyone know if this will work? Is this fastboot "lock" differs from the original "lock"?
terstor said:
I know that you know
I'm just curious if android pay will work again if you lock bootloader again for example using 'fastboot oem lock'.
If someone is unlocking bootloader to install custom recovery only, it would be good idea to unlock -> install recovery -> lock -> install android Pay.
But does anyone know if this will work? Is this fastboot "lock" differs from the original "lock"?
Click to expand...
Click to collapse
Ah sorry it's hard to tell sometimes when people are making posts just to hit that first 5 posts for access. If there was a signed recovery file, Magisk would be perfect for all sorts of hi-jinx (Like for example on the ZTE Axon 7)
Unfortunately because of the way xiaomi controls unlocking the bootloader there is no way to have a custom recovery and a locked bootloader. The recovery would have to be signed by xiaomi in order to boot it.
Signing system components isn't something I know much about, all we seem to have access to is the firehose in the fastboot images but even then with the way xiaomi have locked down fastboot it seems to require some kind of authorisation first.
I was able to flash the custom recovery with a locked bootloader by modifying a fastboot image before flashing and reclocking. This just forces the phone into EDL mode when trying to boot into recovery. The system itself continues to work and will quickly overwrite the unsigned recovery with the MIUI one if an attempt to boot into recovery doesn't happen.
The locks are all the same, this can be checked with
Code:
fastboot oem device-status
on locked and unlocked phones.
Ok, so if I understood correctly, custom recovery will stop working when i will lock the bootloader.
Sorry for the little offtop, but i have another question connected with this issue. And i can't verify it by myself because i'm still waiting for unlock approval. What will happen in this scenerio:
stock rom *stable* (not dev) -> unlock bootloader -> install custom recovery -> flash eg. SuperSu.zip (to get root) via recovery -> instal magisk/xposed -> lock bootloader.
3 questions:
1. Will root 'survive' after locking or not?
2. Will xposed/magisk survive and works correctly or not?
3. OTA updates will be available or not?
I can confirm locking the boot loader and flashing original firmware global works with Android pay
Sent from my Mi Note 2 using Tapatalk
I am able to get Xiaomi Mi Note 2 and Android Pay working WITH Magisk and unlocked bootloader.
1. Install Magisk
2. Install this patch
There are some issues with files unmounting correctly. I had to manually stop and start magisk hide to get this working.
But right now, I have Android Pay confirmed working, with an unlocked phone.
thedeejay said:
I am able to get Xiaomi Mi Note 2 and Android Pay working WITH Magisk and unlocked bootloader.
1. Install Magisk
2. Install this patch
There are some issues with files unmounting correctly. I had to manually stop and start magisk hide to get this working.
But right now, I have Android Pay confirmed working, with an unlocked phone.
Click to expand...
Click to collapse
Sorry, I have one more question. Which root did you use? (SuperSU, MagiskSU, or ?)
Felixweaster said:
Sorry, I have one more question. Which root did you use? (SuperSU, MagiskSU, or ?)
Click to expand...
Click to collapse
MagiskSU
thedeejay said:
MagiskSU
Click to expand...
Click to collapse
Sorry, which ROM do you install in phone?
I installed the modified MIUI 8 China Developer ROM 7.5.6 without root in my phone.
After flash Magisk V.12 in twrp 3.0.2.0, the Magisk do nothing in my phone.
Felixweaster said:
Sorry, which ROM do you install in phone?
I installed the modified MIUI 8 China Developer ROM 7.5.6 without root in my phone.
After flash Magisk V.12 in twrp 3.0.2.0, the Magisk do nothing in my phone.
Click to expand...
Click to collapse
I am using MIUI Global Stable 8.2.5. However, with the patch (which I think you haven't installed), it shouldn't matter which ROM you are using - China or Global, Stable or Dev. What the patch does is mainly changes the build.prop to a recognised device version and a few other things on the back end to hide being unlocked.
thedeejay said:
I am using MIUI Global Stable 8.2.5. However, with the patch (which I think you haven't installed), it shouldn't matter which ROM you are using - China or Global, Stable or Dev. What the patch does is mainly changes the build.prop to a recognised device version and a few other things on the back end to hide being unlocked.
Click to expand...
Click to collapse
My problem is nothing working after flash Magisk only or with patch!! Q___Q!
I will test and discuss with other people and developer on Sunday with new ROM.
Thank you very much.
Felixweaster said:
My problem is nothing working after flash Magisk only or with patch!! Q___Q!
I will test and discuss with other people and developer on Sunday with new ROM.
Thank you very much.
Click to expand...
Click to collapse
Can you send a copy of your Magisk log? Go to Magisk -> Log and click on Magisk.
I have a feeling that the issue may be that Magisk might not be unmounting correctly. There is quite a bit of a discussion on this (as well as even MORE patches to get this to work)
(and to make sure, you also don't have xposed?)
thedeejay said:
Can you send a copy of your Magisk log? Go to Magisk -> Log and click on Magisk.
I have a feeling that the issue may be that Magisk might not be unmounting correctly. There is quite a bit of a discussion on this (as well as even MORE patches to get this to work)
(and to make sure, you also don't have xposed?)
Click to expand...
Click to collapse
You can find the log as attached.
I did NOT have xposed.
Felixweaster said:
You can find the log as attached.
I did NOT have xposed.
Click to expand...
Click to collapse
It is mounting xposed so you still have traces of it left. Go through these steps:
flash this file in TWRP: - Xposed Uninstaller
Reboot. Check if Magisk is working. If it is not, reboot back into TWRP and flash Magisk v12.0 again: Latest Magisk
Reboot. Do a few keypresses before going back into TWRP. Flash This patch here: Xiaomi safetynet fix v1.3
Reboot back into system, and check if SafetyNet is working (can be done in Magisk Manager). If it isn't, reboot into TWRP once again and flash THIS one here: Magisk v12.0 fix
(So total of 4 files that need to be flashed and cycled through).
Also make sure that you DO NOT clear cache/dalvik cache at any stage!
Give that a shot and let me know how it goes.
thedeejay said:
It is mounting xposed so you still have traces of it left. Go through these steps:
flash this file in TWRP: - Xposed Uninstaller
Reboot. Check if Magisk is working. If it is not, reboot back into TWRP and flash Magisk v12.0 again: Latest Magisk
Reboot. Do a few keypresses before going back into TWRP. Flash This patch here: Xiaomi safetynet fix v1.3
Reboot back into system, and check if SafetyNet is working (can be done in Magisk Manager). If it isn't, reboot into TWRP once again and flash THIS one here: Magisk v12.0 fix
(So total of 4 files that need to be flashed and cycled through).
Also make sure that you DO NOT clear cache/dalvik cache at any stage!
Give that a shot and let me know how it goes.
Click to expand...
Click to collapse
After flash Xposed Uninstaller & reboot => magisk nothing working
After flash Magisk v12.0 => magisk nothing working
After flash Magisk v12.0 again & Xiaomi safetynet fix v1.3 => magisk nothing working
After flash Magisk v12.0 again & Xiaomi safetynet fix v1.3 again & Magisk v12.0 fix => magisk nothing working
After flash Xiaomi official root
I get the same error log as attached.
I also attach the recovery log in attachment.
When I check the recovery log, there are something strange as below.
============
MagiskBoot (by topjohnwu) - Boot Image Modification Tool
Loading cpio: [ramdisk.cpio]
grep: init.rc: No such file or directory
sed: init.rc: No such file or directory
sed: init.rc: No such file or directory
Cannot open init.rc
MagiskBoot (by topjohnwu) - Boot Image Modification Tool
Loading cpio: [ramdisk.cpio]
Cannot find the file entry [sepolicy]
MagiskBoot (by topjohnwu) - Boot Image Modification Tool
Loading cpio: [ramdisk.cpio]
Can't open 'sepolicy': No such file or directory
Could not load policy
Cannot open sepolicy
......
......
- Flashing new boot image
I:Set overlay: ''
5745+0 records in
5745+0 records out
23531520 bytes (22.4MB) copied, 0.291553 seconds, 77.0MB/s
- Unmounting partitions
losetup: /dev/block/loop0: No such device or address
umount: can't unmount /system: Device or resource busy
- Done
I:Updater process ended with RC=0
I:Legacy property environment disabled.
I:Install took 30 second(s).
I:Install zip Success,and install cofface-no-verity by cofface.
================
1. After flash the TWRP Unofficial TWRP 3.1.0-0 Mi Note 2 (scorpio)
2. Mount the /system read-write (I'm NOT sure do it cause something wrong?)
3. flash Magisk v12.0 => magisk working, saftnet false
4. Xiaomi safetynet fix v1.3 => magisk working, saftnet false
5. flash Magisk v12.0 fix => magisk working, saftnet true (before check saftnet, I found Magisk Hide in Magisk Manager and I also selected the safetynet attest app.)
Three more question
1. When you flash Magisk, is the /system read-only ?
2. Where do you have Magisk v12.0 fix ??
3. Why do you ask to flash Xiaomi safetynet fix v1.3 not Xiaomi safetynet fix v1.6 ?
thedeejay!! Thank you very much!!

EngineerMode unroot?

back when engineermode exploit backdoor 'thing' whatever you want to call it, was still a thing i seized to opportunity to gain root access, however since then magisk hide has begun failing me and i would like to either find a way to update magisk from v14.0 safely, or to unroot completely (preferably without wiping) as this has started being problematic. I am on the latest oxygenOS update and i used this guide to root (i originaly linked it here but apparently i cant do that, it was on github, called OneplusRoot by a fella named aldur.)
If anyone can help id really appreciate it.
Thanks in advance
Since One Plus removed engineering mode I'm surprised you were able to update OOS and maintain the exploit. Why don't you just unlock your bootloader and root the proper way? Your phone won't melt if you do.
I would like to avoid wiping if possible. I too am surprised at the persistence of root after at least 3 OTAs. At this point I no longer really need root and would rather my phone run smoothly without some applications crashing or not running due to root.
bump?
gbesh said:
bump?
Click to expand...
Click to collapse
As long as your system boots, and you have root, install the latest magisk manager from the magisk thread, and it will prompt you to update. As long as you give magisk manager root access you should be able to do a "direct install" and reboot and should be up to date. Back up your data first though, I'm not responsible for your data loss (but this worked for me)
Same to unroot. Magisk has an uninstall option that should fully unroot you
manor7777 said:
As long as your system boots, and you have root, install the latest magisk manager from the magisk thread, and it will prompt you to update. As long as you give magisk manager root access you should be able to do a "direct install" and reboot and should be up to date. Back up your data first though, I'm not responsible for your data loss (but this worked for me)
Same to unroot. Magisk has an uninstall option that should fully unroot you
Click to expand...
Click to collapse
Well my system doesn't boot with root. I have to manually mount something and start the magisk service.
Which is why I'm not sure how to update as I've been told the updated version has a different file structure that the one I'm on.
were you able to unroot? i think i am in the same boot right now, on 4.5.13 with magisk root by engineermode, if you were successful please tell me how
yohouse2 said:
were you able to unroot? i think i am in the same boot right now, on 4.5.13 with magisk root by engineermode, if you were successful please tell me how
Click to expand...
Click to collapse
no unfortunately i am still waiting for a solution.
gbesh said:
no unfortunately i am still waiting for a solution.
Click to expand...
Click to collapse
When I ran out of options,I unlocked the bootloader (wiped the device), and the new system was unrooted, i then installed Nolimits rom based on OOS 5.1.2
I asked on another thread and another user told me that if you accepted the complete zip update of the OTA prompt the updated system would lose the root, but you wouldn't lose your data or apps, which is nice, but keep in mind you are more probable to have worse performance or battery than clean install
yohouse2 said:
When I ran out of options,I unlocked the bootloader (wiped the device), and the new system was unrooted, i then installed Nolimits rom based on OOS 5.1.2
I asked on another thread and another user told me that if you accepted the complete zip update of the OTA prompt the updated system would lose the root, but you wouldn't lose your data or apps, which is nice, but keep in mind you are more probable to have worse performance or battery than clean install
Click to expand...
Click to collapse
I can confirm this is not the case, i have been updating as the updates roll out and i am now on 5.1.2 and still able to get root access through adb with a locked bootloader.
gbesh said:
I can confirm this is not the case, i have been updating as the updates roll out and i am now on 5.1.2 and still able to get root access through adb with a locked bootloader.
Click to expand...
Click to collapse
Well the alternative is another thing i read but can't find, and honestly can't recommend unless you find in too, is that you can delete the apk and the magisk image(don't know which one, this is how bad i remember this), then rebooting would remove the root.
yohouse2 said:
Well the alternative is another thing i read but can't find, and honestly can't recommend unless you find in too, is that you can delete the apk and the magisk image(don't know which one, this is how bad i remember this), then rebooting would remove the root.
Click to expand...
Click to collapse
After one of the recent updates, magisk hide started working again and my apps are no longer crashing. It is strange but i guess this situation has turned out favourably after all.

Magisk Systemless root how to OTA update? Help needed!

I'm following the topjohnwu's guide on how to update with Magisk but I do not find it clear enough. Are these the steps I need to take in order to not-brick and update my phone with the Feb update.
1. Uninstall Magisk by "restore images" option.
2. Install OTA
3. Reboot to reinstall Magisk on second slot
Magisk is NOT installed on the second partition! And I prefer not to flash back the original image just to do that. My system should be read only and I do not have twrp, I never had, I updated my Google services framework from apkmirror and I got the update, now how do I apply it without soft bricking?
Update
Step 2 failed, "installation problem". Wtf do I do in order not to lose Magisk or data?
Edit
I've uninstalled Magisk but haven't restarted, hoping to get a solution where I keep my sh*t since that's what the guide said...
Edit 2
I'm reading the other thread but I'm having trouble finding a single useful information there, quote one if you find it, it might be my autism that I don't see a solution in that three pages long thread. Tell me I need to MiFlash this sh*t so I calmly jump through my window instead of wasting the whole night on making it work, then wasting another day on backing my sh*t up.
Edit 3
Fully uninstalled Magisk by instructions of an indian guide. BOOTLOOP.
Note to self, stop following southern asian guides.
Downloaded ROM and MiFlash, flashed flash_all_except_storage.bat.
Shook for 4 minutes until "success" mark, successful reboot.
Edit 4:
follow the regular magisk flash guide https://forum.xda-developers.com/mi-a1/help/how-to-root-mi-a1-february-ota-update-t3757934
If you got into bootloop after Magisk uninstallation, you did modify system partition at some point. This is also the reason why you couldn't install OTA. Magisk OTA update guide works perfectly fine for unaltered system partition.
_mysiak_ said:
If you got into bootloop after Magisk uninstallation, you did modify system partition at some point. This is also the reason why you couldn't install OTA. Magisk OTA update guide works perfectly fine for unaltered system partition.
Click to expand...
Click to collapse
That's what I figured, but how? I just did exactly everything I did before the OTA attempt, I just installed few modules and touched nothing else. At which point could've I touched system partition?
So I'm reading now that apps can still alter /system with the Magisk root perm, so, I what about one of these apps.
1. Does anyone know if they can mess with the system?
BusyBox
Greenify
Lucky patcher (this c*nt is my main suspect)
Titanium backup
2. Can we somehow make sure that we haven't touched the system partition before OTA attempt?
3. Once I've redone everything (flash Rom without storage, install OTA, install Magisk), my system shouldn't be touched now, right?
A14DWIN said:
That's what I figured, but how? I just did exactly everything I did before the OTA attempt, I just installed few modules and touched nothing else. At which point could've I touched system partition?
So I'm reading now that apps can still alter /system with the Magisk root perm, so, I what about one of these apps.
1. Does anyone know if they can mess with the system?
BusyBox
Greenify
Lucky patcher (this c*nt is my main suspect)
Titanium backup
2. Can we somehow make sure that we haven't touched the system partition before OTA attempt?
3. Once I've redone everything (flash Rom without storage, install OTA, install Magisk), my system shouldn't be touched now, right?
Click to expand...
Click to collapse
Please keep in mind that Magisk is 2in1 package. First of all it provides root access, any app with root access can modify system directly. Second feature are systemless modifications, but you must follow defined rules to make them work.
From your list of apps, BusyBox would be my first suspect. You must use Magisk BusyBox module, the standard BusyBox is installed directly to the system partition. Lucky app might be the culprit too, though it depends on which features exactly did you use.
Yes, once you reflash stock ROM, apply OTA and install Magisk (the correct way), you're system partition will be ready for the next OTA.
Someone mentioned one command which could verify the last modification date of any partition, but can't find it right now.
_mysiak_ said:
Please keep in mind that Magisk is 2in1 package. First of all it provides root access, any app with root access can modify system directly. Second feature are systemless modifications, but you must follow defined rules to make them work.
From your list of apps, BusyBox would be my first suspect. You must use Magisk BusyBox module, the standard BusyBox is installed directly to the system partition. Lucky app might be the culprit too, though it depends on which features exactly did you use.
Yes, once you reflash stock ROM, apply OTA and install Magisk (the correct way), you're system partition will be ready for the next OTA.
Someone mentioned one command which could verify the last modification date of any partition, but can't find it right now.
Click to expand...
Click to collapse
Dang I really need that command.
_mysiak_ said:
Please keep in mind that Magisk is 2in1 package. First of all it provides root access, any app with root access can modify system directly. Second feature are systemless modifications, but you must follow defined rules to make them work.
From your list of apps, BusyBox would be my first suspect. You must use Magisk BusyBox module, the standard BusyBox is installed directly to the system partition. Lucky app might be the culprit too, though it depends on which features exactly did you use.
Yes, once you reflash stock ROM, apply OTA and install Magisk (the correct way), you're system partition will be ready for the next OTA.
Someone mentioned one command which could verify the last modification date of any partition, but can't find it right now.
Click to expand...
Click to collapse
Don't bother trying to find it, it exists, I'll make a dedicated thread at some point, thanks for the answer, BusyBox seems logical.
The correct way to install Magisk? I just flash Ranjit's patched img from the official thread on Magisk root, that should be the correct way.
I just use lucky to patch cirtain apps, so that shouldn't be a problem
Right now, I'm giving Magisk root perm to Greenify, Lucky Patcher and Unified Hosts. Also both Greenify and the Unified hosts adblock have their own modules in magisk.
Hopefully I still haven't touched my system partition.
I encountered the error as well after trying the Pixel OTA method. To flash the update successfully, I flashed stock January system and boot img via fastboot and it updated properly after. Then I just patched the stock Feb boot img and went back to fastboot. Once there, i did the fastboot boot command with the patched Feb boot.img so I got root back after updating.
Sent from my Xiaomi Mi A1 using XDA Labs
HI,
I have a redmi5+ rooted. I use luckypatcher (i applied some patchs to some apps) and i have installed once BusyBox (didn't do anything in special).
I want to know if it is secure to flash the full update?
PS: how do I confirm if the system files and vendor are ok to proceed?
Thanks
cant you flash the ota in twrp and then reflash magisk if needed?
robgee789 said:
cant you flash the ota in twrp and then reflash magisk if needed?
Click to expand...
Click to collapse
Yes, I can do that.
I Know the procedure to flash full zip file via TWRP. Via this toturial: youtube.com/watch?v=oUUzxYHV_ac&t=1s&index=11&list=WL
But i want to know if it is secure to flash, because i used these two applications.

"Installation Failed" MI A1 OTA UPDATE

Ok, why the f. did I get "installation failed" when installing OTA following this guide?
I followed the guide, I hit uninstall and "restore images" in magisk, it restored the stock image and when I tried running feb ota, I got "installation failed", why?
Also, why did my device get in a bootloop by just fully uninstalling magisk?
I had unlocked bootloader with systemless root, with no TWRP, never booted it, never flashed it, only fastboot commands I ran were oem unlock and boot patched_boot.img. I never touched system partition (on purpose), never installed anything other than a bunch of magisk modules, safetynet was always working, if it matters.
PSA FOR GOOGLE VISITORS:
Do not fully uninstall magisk after you get "installation failed", I got a bootloop and had to flash flash_all_except_storage.bat from mi a1 stock rom using miFlash (bottom right to select it, don't flash_all if you want your data).
Same thing happened with me... what exactly i done was...booted into patched boot.img using fastboot and after that used magisk manager and installed camera2api and just substratum.....but when i got notification of feb update... I tried to uninstall magisk manager using complete uninstall option....then restarted manually then it booted up and then suddenly shuts down and started showing a black screen with Android logo with (No command) written below it......to recover from this condition i again tried to use the same fastboot method for booting into patched boot... after which i was able to use my mobile.... normally but I'm not able to install feb update.... I'm downloading the complete stock rom.....but if there's any other method which can be efficient so plz inform....
Azeemkwow said:
Same thing happened with me... what exactly i done was...booted into patched boot.img using fastboot and after that used magisk manager and installed camera2api and just substratum.....but when i got notification of feb update... I tried to uninstall magisk manager using complete uninstall option....then restarted manually then it booted up and then suddenly shuts down and started showing a black screen with Android logo with (No command) written below it......to recover from this condition i again tried to use the same fastboot method for booting into patched boot... after which i was able to use my mobile.... normally but I'm not able to install feb update.... I'm downloading the complete stock rom.....but if there's any other method which can be efficient so plz inform....
Click to expand...
Click to collapse
Just like he said, yeah using Magisk means waving bye to OTA updates. This was the exact problem I faced where I installed Magisk module without TWRP for the joys of using substratum. Installating magisk won't taper your system, they said, you would still get the update, they said. Well NEWS FLASH for those, installing magisk tampers your system partitions and you are in a dreadlock situation where you can't do ****. People claim there are work arounds like you linked but no one has actually confirmed using it. And the worst part is that if you try to install the update even after uninstalling Magisk , it will still give you the error. How do I know? tried it, doesn't work. The only option which was left to me was to download the official Oreo ROM from MiUI global and flash it using MiFlash.
Flashing the boot.img from stock rom might solve the problem. If not, flash the stock rom using MiFlash with save user data option.
Alanjameson99 said:
Just like he said, yeah using Magisk means waving bye to OTA updates. This was the exact problem I faced where I installed Magisk module without TWRP for the joys of using substratum. Installating magisk won't taper your system, they said, you would still get the update, they said. Well NEWS FLASH for those, installing magisk tampers your system partitions and you are in a dreadlock situation where you can't do ****. People claim there are work arounds like you linked but no one has actually confirmed using it. And the worst part is that if you try to install the update even after uninstalling Magisk , it will still give you the error. How do I know? tried it, doesn't work. The only option which was left to me was to download the official Oreo ROM from MiUI global and flash it using MiFlash.
Click to expand...
Click to collapse
Thanks...now that's what I'm planning to do...install official rom through miflashtool
RavinduSha said:
Flashing the boot.img from stock rom might solve the problem. If not, flash the stock rom using MiFlash with save user data option.
Click to expand...
Click to collapse
Does the 'save user data'-option also preserve the apps installed?
Thanks!
Tiemichael said:
Does the 'save user data'-option also preserve the apps installed?
Thanks!
Click to expand...
Click to collapse
Yes it saves all user data including settings, apps and app data
I had the same issue. I used the tool linked below and the steps:
- Unlock Bootloader
- Flash Stock ROM
- Download ROM (and wait for that to happen)
- Keep UserData (and wait again)
- Lock Bootloader
After that I was able to install the update, then re-install Magisk and camera tweaks.
https://forum.xda-developers.com/mi-a1/how-to/tool-xiaomi-mi-a1-tool-drivers-unlock-t3742857
The guide mention in OP had worked for me for at least 3 updates including the major one from nougat to oreo with any issue. Be aware that mounting system partition as read AND WRITE brakes OTA. You don't even need to change anything just mounting it will brake it. That could easily happen using a root file explorer or a hosts file based add blocker if Magisk is not properly set (systemless hosts support toggle in Magisk settings).

How to use OTA update after flashing magisk?

I've got an xt1768 RETAIL on npqs26.69-64-2 with bootloader unlocked. I flashed magisk, xposed system-less and the f2fs cache modules a while ago and just got the prompt for the new ota. I thought the update procedure was to disable magisk, reboot and then install the ota normally. After disabling magisk and rebooting the boot process gets stuck at "bad key", i assume because magisk modified one of the images. I'm able to get back into the bootloader and boot twrp and reflash magisk and everything boots up fine after. If anyone has a guide with the steps to actually do the update I'd appreciate it.
xeropressence said:
I've got an xt1768 RETAIL on npqs26.69-64-2 with bootloader unlocked. I flashed magisk, xposed system-less and the f2fs cache modules a while ago and just got the prompt for the new ota. I thought the update procedure was to disable magisk, reboot and then install the ota normally. After disabling magisk and rebooting the boot process gets stuck at "bad key", i assume because magisk modified one of the images. I'm able to get back into the bootloader and boot twrp and reflash magisk and everything boots up fine after. If anyone has a guide with the steps to actually do the update I'd appreciate it.
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Click to collapse
Well the thing is, you've modified your boot.img and unencrypted your device. So ota is not really going to work. Normally, you uninstall magisk and restore your stock boot.img, and if you've only booted twrp, you could take the ota. Did you also flash the no verity opt encrypt zip?
The problem is, when you flash the stock boot.img, your device is going to re encrypt as soon as you boot.
So you'll likely need the full firmware package to update. I do mine with rsdlite and the service file.xml within the full firmware when it becomes available.
Someone else may have better news for you, but I don't.
madbat99 said:
Well the thing is, you've modified your boot.img and unencrypted your device. So ota is not really going to work. Normally, you uninstall magisk and restore your stock boot.img, and if you've only booted twrp, you could take the ota. Did you also flash the no verity opt encrypt zip?
The problem is, when you flash the stock boot.img, your device is going to re encrypt as soon as you boot.
So you'll likely need the full firmware package to update. I do mine with rsdlite and the service file.xml within the full firmware when it becomes available.
Someone else may have better news for you, but I don't.
Click to expand...
Click to collapse
I did not flash the no verity opt encrypt zip, pretty sure magisk sets no verity by default as that setting is unchecked in the magisk manager. Device is still encrypted. It was my understanding that when using the restore image uninstall of magisk boot.img would be restored to its stock state, which leads me to believe that the system partition was modified.
xeropressence said:
I did not flash the no verity opt encrypt zip, pretty sure magisk sets no verity by default as that setting is unchecked in the magisk manager. Device is still encrypted. It was my understanding that when using the restore image uninstall of magisk boot.img would be restored to its stock state, which leads me to believe that the system partition was modified.
Click to expand...
Click to collapse
So you kept encryption too? Then you should be able to restore stock boot.img and take ota. Unless you have modified your system somewhere along the way. Magisk itself doesn't modify it.
Most are not able to get the phone to boot with encryption enabled.
So if you have not modified system at any point, then restoring the stock boot.img should have worked.
You can download the stock firmware that your device is currently on and flash the system.img and boot.img from it to be certain.
Edit:
Oohhh, it's not stuck at bad key, it just takes awhile to pass that. It's because of unlocked bootloader. Without a patched boot.img, it says bad key, but it should proceed after a minute or two. Sorry, just re read your first post.

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