Develop Bugs

Installing stock/official ROM over Vendor ROM

Hi, a few questions:
1. Would it be safe to install using the Mi Max's built in updater, the official helium Chinese ROM (stable or developer) OVER a vendor ROM (global, unofficial ROM that came with my 64GB Mi Max)? The vendor/unofficial ROM that came with my 64GB Mi Max is Global Miui 7.3.14.0.0. I believe my Mi Max still has an unlocked bootloader and has not been rooted despite the vendor ROM. 2. If the installation is successful, would the installation retain Google playstore/Google apps and all other apps in their current state, or will all installed apps and all personal data be removed sort of like a factory reset?
3. If the installation is not successful, will it be a simple 'install failure' where the existing vendor ROM is retained and still fully functional, or will it result to a brick (device no longer usable/endless bootloop)?
Thanks in advance.

Good Day - Or Night
I had a similar problem and decided to unlock the boot loader and then proceeded to install the Miui 64 Chinese Dev ROM - Official complete with OTA Updates.
Here's a thread I made to describe that
http://en.miui.com/thread-336609-1-1.html
Now if you do an install on top of this - may or may not retain the Google apps - but more likely - you may run into permissions problems and unstable device.
So - in short I'd recommend - Unlock boot loader - Install ROM of Choice (Mi Max 64 and 128 do not have any International ROMs at this time - to the best of my knowledge and certainly no Miui 8 Official ROMs).
Sent from my MI MAX using Tapatalk

Just an update to my original post above...
The Global ROM for Mi Max Helium (64GB/128 GB; SD 652) had just been released, so I decided to download
the Global ROM for Mi Max Prime (Helium). The download link I used is found here:
http://en.miui.com/download-302.html#458
It turns out, it doesn't work when installed over vendor ROM's. I tried installing it on my Mi Max with the vendor ROM (Miui 7.3.14.0.0),
using the built in updater app in the Mi Max, but the phone just tells me 'Couldn't verify update package'.
Other times, it seems to install then reboots afterwards, giving you the false impression that the update is working. However, after
a seemingly 'stuck' reboot (seemed like a bootloop), it returns to your home screen as if nothing happened... You end up with
the same vendor ROM with everything untouched (nothing changed/deleted).
The only thing that did work for me was flashing the Global ROM helium image using Mi flash beta.
The procedure worked even with a locked bootloader (also, with phone not rooted).
Anyway, for those who do want to get rid of the vendor ROM on their Mi Max helium and install
the recently released Official Global ROM for the helium device, here's the link to the fastboot procedure using Miflash beta:
http://en.miui.com/thread-307139-1-1.html
You will need to select the correct Mi Max helium image files here:
http://en.miui.com/a-234.html
You will need to unzip the *.tgz file to get the *.tar file, then unzip again the *.tar file to get the
fully unzipped image directory. You then flash the entire unzipped image directory using Miflash beta.
This procedure works on my non-rooted Mi Max with locked bootloader. You just need to be careful though to flash
the correct image file directory or you'll have a bricked device. The Mi Max helium being mentioned here refers to the 64GB or 128GB version
with snapdragon 652 processor. It used to be called Mi Max Pro but it seems it is now officially called the Mi Max Prime.

i have mi max 3gb ram/32gb (sd650) model.would the above procedure work if i am on official global stable (7.5.6.0--MBCMIDE).i got the permission to unlock but am unable to,the process stops at 50% saying that the accounts dont match.earlier there was a mismatch in phone no,but i rectified that by resetting the device and applying for fresh permission with proper details,but still the prob persists.on reading multiple threads it seems that flashing the chinese developer rom would be my best bet.so is the process outlined above going to work if i want to flash chinese developer rom over my global stable rom,or is it better i go for global developer rom.in all these cases im talking about the fastboot roms.im not going to hardbrick my device am i ?,becoz the nearest xiaomi service centre is some 200kms away from where i live.i thought i would ask the experts here before i take the plunge lest i regret later for not having asked you guys first.plz kindly reply with your advices,im so anxious to flash the rr rom ever since i got the device a few days back,more so now that the 3g data bug is also squashed

You will not need to flash the global rom if you are already on official global rom as you stated. The MIUI8 update will be delivered via OTA if not at present, maybe in the coming days. Now if you are on official global rom and wish to flash other roms, I am not so sure it will not be risky if you have a locked bootloader. Maybe somebody else has experienced doing the same so let's hope the person will share it in this thread.
wingryder said:
i have mi max 3gb ram/32gb (sd650) model.would the above procedure work if i am on official global stable (7.5.6.0--MBCMIDE).i got the permission to unlock but am unable to,the process stops at 50% saying that the accounts dont match.earlier there was a mismatch in phone no,but i rectified that by resetting the device and applying for fresh permission with proper details,but still the prob persists.on reading multiple threads it seems that flashing the chinese developer rom would be my best bet.so is the process outlined above going to work if i want to flash chinese developer rom over my global stable rom,or is it better i go for global developer rom.in all these cases im talking about the fastboot roms.im not going to hardbrick my device am i ?,becoz the nearest xiaomi service centre is some 200kms away from where i live.i thought i would ask the experts here before i take the plunge lest i regret later for not having asked you guys first.plz kindly reply with your advices,im so anxious to flash the rr rom ever since i got the device a few days back,more so now that the 3g data bug is also squashed
Click to expand...
Click to collapse

wingryder said:
i have mi max 3gb ram/32gb (sd650) model.would the above procedure work if i am on official global stable (7.5.6.0--MBCMIDE).i got the permission to unlock but am unable to,the process stops at 50% saying that the accounts dont match.earlier there was a mismatch in phone no,but i rectified that by resetting the device and applying for fresh permission with proper details,but still the prob persists.on reading multiple threads it seems that flashing the chinese developer rom would be my best bet.so is the process outlined above going to work if i want to flash chinese developer rom over my global stable rom,or is it better i go for global developer rom.in all these cases im talking about the fastboot roms.im not going to hardbrick my device am i ?,becoz the nearest xiaomi service centre is some 200kms away from where i live.i thought i would ask the experts here before i take the plunge lest i regret later for not having asked you guys first.plz kindly reply with your advices,im so anxious to flash the rr rom ever since i got the device a few days back,more so now that the 3g data bug is also squashed
Click to expand...
Click to collapse
From what I've read, most people get the 50% error because they're not logged into the same Mi Account on their phone as well as the MiUnlock Tool. If you are logged in with the same account on the phone and the tool, then I'd suggest logging out of both, and then logging into the phone first, then the tool. This is what worked for me. If everything I've mentioned fails, you can use Doom Slayer's method to root and install the rom of your choice, which is posted right here .

thank you for responding guys,anyways i took a chance and flashed the fastboot developer rom thru edl method using miflash,the flash succeeded but to my dismay the unlock still fails at 50%.even after following all steps.it seems the only thing left is to try with the first account which got unlock permission,i have to apply for the micro sim on that number,since its a normal sim doing duty on my s advance.seems like i confused the xiaomi servers or something with multiple accounts.but eventhough i have multiple accounts i used the matching accounts on both the pc and mobile but no luck for me

wingryder said:
thank you for responding guys,anyways i took a chance and flashed the fastboot developer rom thru edl method using miflash,the flash succeeded but to my dismay the unlock still fails at 50%.even after following all steps.it seems the only thing left is to try with the first account which got unlock permission,i have to apply for the micro sim on that number,since its a normal sim doing duty on my s advance.seems like i confused the xiaomi servers or something with multiple accounts.but eventhough i have multiple accounts i used the matching accounts on both the pc and mobile but no luck for me
Click to expand...
Click to collapse
Make sure everything is okay on your PC's side as well, use the USB cable you got with your phone, install all the drivers, and if you're using Windows 10, disable Driver Signature Enforcement prior to installing the drivers. I used the Xiaomi Universal ADB Drivers. Also search for the Bootloader stuck at 50% tutorial posted by mitch002 on the MIUI forums and try that out, it's seemed to have worked for many.

I was having a hell of a time flashing anything over my Mi Max on a China vendor ROM. I followed these instructions exactly and it worked like a charm. From post #3 above: http://en.miui.com/thread-307139-1-1.html This does not unlock or root the device. If you're still looking to unlock, I can't be of assistance, but I wish you the best.

Has anyone been able to get fastboot access on the G710VM with Android 9.0?

So, I picked up a used G710VM 64GB Storage/4GB RAM, I specifically wanted this model because I'm on Verizon and wanted to ensure that my phone would work with their wack-as-all-hell network. Upon booting it up on the stock firmware for the first time, and intentionally not putting in my SIM, nor getting it online, I saw it using up 16 GBs of storage right out of the gate, and about 2.8 or so GBs of RAM. I thought this unacceptable, and so began my journey of putting custom ROM on it.
I was looking at putting either Lineage OS or AOSP, but both guides require getting TWRP on there first, and that has been my hang-up.
I followed this guide on getting the bootloader unlocked, and got that done.
Now my problem is fastboot mode, with the bootloader unlocked, and on the G710ULM11g firmware, I can get into it just fine. But on the G710EM20b, G710EM20d, and G710ULM20d firmwares I follow the steps to get into fastboot mode, get a warning about the bootloader being unlocked, and then it just does a proper boot up into the OS, every. single. time. And I've gone back and forth between my 8.0 and 9.0 versions of Android a few times, and confirmed it's only the 9.0 ones that are giving me this issue, the 8.0 one lets me in without fail.
Did I unlock the bootloader wrong? Or am I just using the wrong firmware? Has anyone else had luck with a G710VM version of the phone? Or did I hose myself by not buying a ULM or EM version?

Out of appreciation for all the work that everyone in this community does (I read lots but don't post often) I would say, you need to search and skim through at least an hour worth of posts to find that answer, but I'll link it here to say thanks. Short answer- PIE loses Fastboot commands. You can flash to Oreo, and then you should be able to use fastboot commands. I still haven't found a posted method for installing TWRP. I just acquired an 'unlocked' Sprint model with the ULM firmware and would love to explore rom options.
https://forum.xda-developers.com/lg-g7-thinq/how-to/cross-flash-oreo-pie-firmwares-lg-g7-g7-t3915303

In the same guide post if you look on page 6 you will find how people have updated to pie retaining fastboot.
It can also be used to use a pie vm rooted stock rom also.

MaitiuD2 said:
Out of appreciation for all the work that everyone in this community does (I read lots but don't post often) I would say, you need to search and skim through at least an hour worth of posts to find that answer, but I'll link it here to say thanks. Short answer- PIE loses Fastboot commands. You can flash to Oreo, and then you should be able to use fastboot commands. I still haven't found a posted method for installing TWRP. I just acquired an 'unlocked' Sprint model with the ULM firmware and would love to explore rom options.
https://forum.xda-developers.com/lg-g7-thinq/how-to/cross-flash-oreo-pie-firmwares-lg-g7-g7-t3915303
Click to expand...
Click to collapse
Thank you very much for responding.
And that really sucks about fastboot and Pie, now I have to wonder how LameMonster82 did it in his guide . Someone else there tried installing that TWRP from Oreo, and got his phone bricked for it.

Halogen_03 said:
So, I picked up a used G710VM 64GB Storage/4GB RAM, I specifically wanted this model because I'm on Verizon and wanted to ensure that my phone would work with their wack-as-all-hell network. Upon booting it up on the stock firmware for the first time, and intentionally not putting in my SIM, nor getting it online, I saw it using up 16 GBs of storage right out of the gate, and about 2.8 or so GBs of RAM. I thought this unacceptable, and so began my journey of putting custom ROM on it.
I was looking at putting either Lineage OS or AOSP, but both guides require getting TWRP on there first, and that has been my hang-up.
I followed this guide on getting the bootloader unlocked, and got that done.
Now my problem is fastboot mode, with the bootloader unlocked, and on the G710ULM11g firmware, I can get into it just fine. But on the G710EM20b, G710EM20d, and G710ULM20d firmwares I follow the steps to get into fastboot mode, get a warning about the bootloader being unlocked, and then it just does a proper boot up into the OS, every. single. time. And I've gone back and forth between my 8.0 and 9.0 versions of Android a few times, and confirmed it's only the 9.0 ones that are giving me this issue, the 8.0 one lets me in without fail.
Did I unlock the bootloader wrong? Or am I just using the wrong firmware? Has anyone else had luck with a G710VM version of the phone? Or did I hose myself by not buying a ULM or EM version?
Click to expand...
Click to collapse
Weird, I'm using G710EM20d firmware on my G710ULM and it boots to fastboot.

"Weird, I'm using G710EM20d firmware on my G710ULM and it boots to fastboot."
-----------------------------------------------------------------------------------------
I have the ULM model as well but the G710EM20d Model doesnt boot to fastboot. Could you tell me the KDZ file you used?
Example, "G710EM10b_00_0521.kdz"
I'd really appreciate the help

u should cross flash the ulm firmware by lg up and then boot ur device in to the download mode after erase laf partition

Trying to stock my op7t and relock the bootloader

Hello can anybody help me?
everytime i try fastboot stock image it boots fine, but i want to relock the bootloader and be back on stock. can anybody help me
if i lock it , it just says this phone can not be booted or data is currupt
im trying msm but, i cant seem to install the correct driver in device managaer
i tried to install twrp but magisk error 1s. and noting can mount. so i need to go back to stock with locked bootloader. so i can use my banking apps again
cheers.

https://forum.xda-developers.com/oneplus-7t/how-to/rom-stock-fastboot-roms-oneplus-7t-t3979213
just follow this, use the flash-all to go back to stock then relock when its all set
unlocking/relocking wipes your data so backup whats necessary

Crystallux said:
https://forum.xda-developers.com/oneplus-7t/how-to/rom-stock-fastboot-roms-oneplus-7t-t3979213
just follow this, use the flash-all to go back to stock then relock when its all set
unlocking/relocking wipes your data so backup whats necessary
Click to expand...
Click to collapse
Is this true? I'm seeing other posts says that you need to use the MSM tool in this scenario. Unfortunately, I only have a Mac so I can't run MSM.
---------- Post added at 08:34 AM ---------- Previous post was at 08:33 AM ----------
Did you get this to work?

I Have tried this several times on my Tmobile version op7t and every time I get to step 7,8,9 and flash-all (with Indian version 10 or Global version10), I end up with my Tmobile Stock 10.3 version of Android, and the wifi does not work. The only way to get the wifi back is to MSMDownload Tool the original stock version which locks the bootloader back up and I'm back with TMobile version 10.3. I downloaded the Fastboot version they suggested. Any ideas why it's not working and reverting back to my original version of Android 10.3?

ohcello said:
I Have tried this several times on my Tmobile version op7t and every time I get to step 7,8,9 and flash-all (with Indian version 10 or Global version10), I end up with my Tmobile Stock 10.3 version of Android, and the wifi does not work. The only way to get the wifi back is to MSMDownload Tool the original stock version which locks the bootloader back up and I'm back with TMobile version 10.3. I downloaded the Fastboot version they suggested. Any ideas why it's not working and reverting back to my original version of Android 10.3?
Click to expand...
Click to collapse
I was having a similar issue. Either the 10.0.9 version was the problem or I was making the error of manually navigating to the fastboot menu when a recovery type language select screen came up (black background with white logo and text). This screen would appear after flash-all.bat had mostly run through and the "Invalid sparse file format at header magic" was the latest output in command prompt.
What worked for me was to use version 10.0.8 and to not touch the phone until I saw the usual blue setup screen.

ImsumDave said:
I was having a similar issue. Either the 10.0.9 version was the problem or I was making the error of manually navigating to the fastboot menu when a recovery type language select screen came up (black background with white logo and text). This screen would appear after flash-all.bat had mostly run through and the "Invalid sparse file format at header magic" was the latest output in command prompt.
What worked for me was to use version 10.0.8 and to not touch the phone until I saw the usual blue setup screen.
Click to expand...
Click to collapse
Thanks so much. So perhaps I try 10.0.8. Can you confirm the exact 10.0.8 build you used? Global? Indian?

ohcello said:
Thanks so much. So perhaps I try 10.0.8. Can you confirm the exact 10.0.8 build you used? Global? Indian?
Click to expand...
Click to collapse
I used the Global build here. I followed this guide minus steps 1, 2, and rooting. I also downloaded and used the latest platform tools from google and I did not overwrite them at any step in the process.

ImsumDave said:
I was having a similar issue. Either the 10.0.9 version was the problem or I was making the error of manually navigating to the fastboot menu when a recovery type language select screen came up (black background with white logo and text). This screen would appear after flash-all.bat had mostly run through and the "Invalid sparse file format at header magic" was the latest output in command prompt.
What worked for me was to use version 10.0.8 and to not touch the phone until I saw the usual blue setup screen.
Click to expand...
Click to collapse
ImsumDave said:
I used the Global build here. I followed this guide minus steps 1, 2, and rooting. I also downloaded and used the latest platform tools from google and I did not overwrite them at any step in the process.
Click to expand...
Click to collapse
OK thanks so much. Do you think it makes any difference what OS I start from before attempting to move to 10.0.8? Right now I'm on Tmobile 10.0.10.HD63CB, but I see an option for a minor OTA update to 10.0.11.HD63CB

ohcello said:
OK thanks so much. Do you think it makes any difference what OS I start from before attempting to move to 10.0.8? Right now I'm on Tmobile 10.0.10.HD63CB, but I see an option for a minor OTA update to 10.0.11.HD63CB
Click to expand...
Click to collapse
I don't know. I believe that was the same build I was running before flashing.

ImsumDave said:
I don't know. I believe that was the same build I was running before flashing.
Click to expand...
Click to collapse
SUCCESS!... Using 10.0.8 did the trick... and I was able to root with Magisk Canary as well. Now I can update to Global 10.0.12. THANKS SO MUCH.

UPDATE - I forgot that I have to re-root after updating OS to 10.0.12. I was able to do that using the latest boot img from this thread - https://forum.xda-developers.com/on...t-international-magisk-patched-t4053945/page5

If you're on oxygen os ,then just flash a downgradeable oxygen os rom by using the local upgrade feature ,then just use the all in one tool or try the fastboot comand of oem locking it should unroot your phone and relock the boot loader ,relocking doesn't work on latest version of oxygen os..

Redmi Note 8 Pro freezing in Android 10

Hi. I got a Redmi Note 8 Pro Global version and I updated it to Android 10 manually. Problem is I am getting random freezes everyday. I would like to go back to Android 9 because these freezing is very annoying and ruining my experience. I am not sure if this is related to MIUI or Android 10 itself. I've done factory reset and reset via recovery mode as well. Still the same. Are any instructions to go back to Android 9?
I've read in some forums that Android 10 has some issues even in pixel devices where if an app freezes, it brings down the whole OS. Mine freeze about 10 seconds, sometimes more. It's happening very randomly in different apps so it is very difficult to replicate.

joenefloresca said:
Hi. I got a Redmi Note 8 Pro Global version and I updated it to Android 10 manually. Problem is I am getting random freezes everyday. I would like to go back to Android 9 because these freezing is very annoying and ruining my experience. I am not sure if this is related to MIUI or Android 10 itself. I've done factory reset and reset via recovery mode as well. Still the same. Are any instructions to go back to Android 9?
I've read in some forums that Android 10 has some issues even in pixel devices where if an app freezes, it brings down the whole OS. Mine freeze about 10 seconds, sometimes more. It's happening very randomly in different apps so it is very difficult to replicate.
Click to expand...
Click to collapse
use indian version android 10 which is on miui v11.0.2.0.
It works fluently without any problem but keep in mind that preloader and other safety file is for Android 9. If you use them before flashing anything in android 10. Then it might brick your device. Even magisk brick some person device in android 10. So be safe before doing modification in it. Until preloader and lk will be available for it.

Hi. Thanks for the suggestion but what if I want to go back to Android 9 Global version? Just want to back to previous version when I got it out of the box. I don't want to flash or use other region roms. Just want to go back to Android 9. Is there any available steps or instructions out there? Can't seem to find one.
1hekill0r said:
use indian version android 10 which is on miui v11.0.2.0.
It works fluently without any problem but keep in mind that preloader and other safety file is for Android 9. If you use them before flashing anything in android 10. Then it might brick your device. Even magisk brick some person device in android 10. So be safe before doing modification in it. Until preloader and lk will be available for it.
Click to expand...
Click to collapse

joenefloresca said:
Hi. Thanks for the suggestion but what if I want to go back to Android 9 Global version? Just want to back to previous version when I got it out of the box. I don't want to flash or use other region roms. Just want to go back to Android 9. Is there any available steps or instructions out there? Can't seem to find one.
Click to expand...
Click to collapse
You can easily go back to android 9 global version by flashing fastboot rom via fastboot. You can flash fastboot rom just via mi flash tool by flashing lk and preloader before flashing rom or you can easily flash every image one by one manually in fastboot mode, Just by using command like fastboot flash system system.img, fastboot flash cust cust.img and so on. It is very easy. Hope it work for you.

Thanks for this. I've been following instructions from this link https://c.mi.com/ph/miuidownload/detail?guide=2. I think you are also referring to this one. I already followed instructions but I am now stuck in the unlocking method which says I need to wait 168 hours.
You mentioned I can flash img files one by one, is still possible when without unlocking the the device first via miui unlock tool?
1hekill0r said:
You can easily go back to android 9 global version by flashing fastboot rom via fastboot. You can flash fastboot rom just via mi flash tool by flashing lk and preloader before flashing rom or you can easily flash every image one by one manually in fastboot mode, Just by using command like fastboot flash system system.img, fastboot flash cust cust.img and so on. It is very easy. Hope it work for you.
Click to expand...
Click to collapse

joenefloresca said:
Thanks for this. I've been following instructions from this link https://c.mi.com/ph/miuidownload/detail?guide=2. I think you are also referring to this one. I already followed instructions but I am now stuck in the unlocking method which says I need to wait 168 hours.
You mentioned I can flash img files one by one, is still possible when without unlocking the the device first via miui unlock tool?
Click to expand...
Click to collapse
Nope you have to first unlock bootloader. But as I read sp flash tool can work without unlocking bootloader. So if you have fastboot than first flash preloader and lk and then you can use sp flash tool without authorised account. But I am not sure if it work then inform me also. And if it don't work you have to first unlock bootloader.

The experience posted by this user only reinforces my general impression not to do a major upgrade (even an "official" one pushed by the manufacturer) on any phone that one uses for primary use, unless you want to get involved in the whole rooting process and all the time and risk that entails.
In my experience, the original version of android that ships with a device, and subsequent minor fixes, are the most adapted to the phones specs. Despite claims otherwise, every major upgrade involves more resource use, since it was designed with the latest hardware in mind. It will therefore almost certainly degrade the performance of a phone, even one not that old. I have had this happen in every phone I have owned. And unless your phone is rooted, you can not downgrade the OS.
So when MIUI 12 comes out, with Android 10, I will definitely wait for others to do it first and wait for the feedback, maybe I'll just pass on it. Right now my RN8P works great, and the additional "features" of android 10 add no functionality whatsoever. Why screw around with something that already works great?
---------- Post added at 11:25 AM ---------- Previous post was at 11:20 AM ----------
BTW the above is true on Apple devices, too, in my experience.

Cannot update past 10.0.3.HD63CB

Hello, I have a T-Mobile HD1907. I unlocked the bootloader and used the pixel experience ROM. I had issues with the microphone not working over calls so I used MSM tool to put it back to its original locked state. It worked well and the phone is back to stock. Unfortunately the phone will not OTA update to android 11. Specifically the update 11.0.1.5.HD63CB. The update will start downloading for about 1 sec and then instantly pause. am having the same issue as described here https://forums.oneplus.com/threads/oneplus-7t-fails-on-system-update.1162696/ however I am not eligible for a phone replacement.
If anyone can help me manually update the phone (perhaps using fastbootd to manually flash it?) it'd be greatly appreciated.
EDIT: have also used oxygen updater app, it doesn't work as I have the t-mobile variant
EDIT2: also when I use the newer MSM tool (for android 11 tmobile) I get "param preload" and "No valid trg ID"

Fixed this by flashing
https://onepluscommunityserver.com/list/Unbrick_Tools/OnePlus_7T/T-Mobile_HD63CB/Q/OnePlus_7T_T-Mobile_OxygenOS_10.0.3.zip
then
https://onepluscommunityserver.com/...CB/Q/OnePlus_7T_T-Mobile_OxygenOS_10.0.13.zip
and then finally
https://onepluscommunityserver.com/list/Unbrick_Tools/OnePlus_7T/T-Mobile_HD63CB/R/OnePlus_7T_T-Mobile_OxygenOS_11.0.1.5.zip
I guess u cant skip versions. sorry for making a thread. hopefully this helps someone else