yashsingh1/xdaforums huggingface dataset:
[Xiaomi 12S Ultra] NOSS8:
Remove all lock screen security and reboot system

Do a backup(Micloud)

Install TWRP/Use this TWRP

Twrp/wipe format data type yes

Reboot TWRP

Use OTG or Put the rom at the root.

Flash rom

or

download an old rom in Fastboot.zip then update via OTA.
[Xiaomi 12S Ultra] sarthak4ever:
This worked, thanks :)

Maybe there was a huge load of photos from the last 5 years, hence, it took around 6-7 hrs to show up in the photos app.
[Xiaomi 12S Ultra] sarthak4ever:
Thanks @NOSS8 :)
[Xiaomi 12S Ultra] gui3gui:
Sadly I think than I've soft bricked my 12s ultra. I have flashed the eu.rom, but after I wanted flash magisk, the systems partitions are not mounted anymore. My bootloader is already unlocked

I have this message, unable to unmap dynamic partitions and my phone doesn't boot. I have access to fastboot and twrp...

Any solutions ?
[Xiaomi 12S Ultra] NOSS8:
Try with this tool:

https://xdaforums.com/t/flash-tool-guide-use-xiaomi-flash-tool.4262425/
[Xiaomi 12S Ultra] energykriger:
Try a factory reset with twrp.
[Xiaomi 12S Ultra] gui3gui:
It doesn't work, finally I solved my error by flashing the super system part from the stock rom by th TWRP. No wipe from any data. Thanks to all !
[Xiaomi 12S Ultra] MarceloSiciliano:
What SOT are you getting on this ROM? Im topping out on 5 hours on very light use and I don't know why. No gaming, auto brightness, FHD...It doesn't make sense
[Xiaomi 12S Ultra] sarthak4ever:
I'm getting around 13-14 hrs with some camera snaps, phone calls and social media browsing. I'll let you know the exact time after checking today.
[Xiaomi 12S Ultra] gui3gui:
Hello, I'm used to getting my hands dirty, but having had a little adventure yesterday, I'll take the liberty of summarising it here;

My worries;

- I had access to TWRP, but impossible to flash TWRP 6.2 in zip file over 5.1

- Impossible to mount the system in RW;

- Impossible to format the data via TWRP

- I was able to flash the eu rom but I stayed in eu rom with a mix of Chinese, especially the keyboard in Chinese...

- I had at the end a nice message Android Recue Party Trigger

This is my solution, thanks to the xda topic which helped me a lot (https://xdaforums.com/t/problem-after-flashing-wth-global-rom.4109649/):

1.Flash of TWRP 6.2 in .img;

2Wipe all via recovery

3. reboot to recovery

4. flash rom

5. Format data partition (format, no wipe, if mke2fs doesn't work, try with rm-f)

6. Reboot system.

So thanks to xda ! ;)
[Xiaomi 12S Ultra] NOSS8:
There are two TWRPs for this device:

The [BOOT] version that flashes in Fastboot mode command.

Installation:

Phone in fastboot mode

Cmd:

fastboot boot twrp.img

Power shell

./fastboot boot twrp.img

then in Twrp go to Advanced -> flash current TWRP.

and

The [REC] version that flashes with the existing TWRP.

In both cases the IMG file must be extracted from the ZIP.
[Xiaomi 12S Ultra] MarceloSiciliano:
No way lol. Did you do anything different on setup to get this?
[Xiaomi 12S Ultra] gui3gui:
I have a little problem, I have no more the mui optimization shown, so I can't install other non-verified apk.

Any people have the same problem and solve it ?
[Xiaomi 12S Ultra] gui3gui:
Some people using the 12s ultra, in UE and only in 4g, have noticed problems with reception or speed?
[Xiaomi 12S Ultra] Calum123456:
Does the rom get rid of the bloatware that miui comes with?
[Xiaomi 12S Ultra] NOSS8:
Yeap,no ads, less useless apps and deactivatable apps.
[Xiaomi 12S Ultra] Calum123456:
And android auto working? Big pet peeve is that it's not supported on Chinese rom.
[Xiaomi 12S Ultra] NOSS8:
Apr 10, 2022

Fixed in our ROMs.. Stable + Weekly..

https://xiaomi.eu/community/threads/mi-12-pro-android-auto.65434/post-656155
[Xiaomi 12S Ultra] RyuXIII:
I know this is not the right thread to ask, but I can't register an account at xiaomi.eu for some reason, and I realy need to report on the issue I'm facing.

I'm using eu MIUI 13 Stable on my Poco F4 (munch), and I'm unable to change the default MiSans font of pages in Chrome, and WebView in general. I've tried every option I could find; toggling System-wide variable Font in the dev options, chagning the phone's fonts through Settings and root access, but nothing works. I'm guessing something broke when porting the aforementioned System-wide variable font feature to MIUI 13.
[Xiaomi 12S Ultra] NOSS8:
You may not be able to register but does not prevent you from doing a search on the Xiaomi EU rom site.

https://xiaomi.eu/community/search/5642685/?q=MiSans+font&o=relevance
[Xiaomi 12S Ultra] RyuXIII:
Oh, I did that, and some users have mentioned this issue, but no one has come with a solution. One of the developers even says they're not facing said issue, but I'm seeing multiple reports past that date, with no dev acknowledging them.
[Xiaomi 12S Ultra] NOSS8:
I don't have this problem with my 12 pro, I can change the font via the theme apps and the browser (edge) displays the selected fonts..

Maybe the next update.;)
[Xiaomi 12S Ultra] RyuXIII:
I would just like some sort of confirmation from the devs about the issue. And that's fair, the F4 is a brand new device. I'm just annoyed at how the site works. I was also hoping the fix would be something we can do by ourselves.
[Xiaomi 12S Ultra] Will.1:
I'm in need of your help please fellas. I'm having issues restoring a backup I did in TWRP

I'm running Xiaomi.eu (stable) with the recommended TWRP (think it was (3.6.2_12 v5.1.12 iirc).

Phone is unlocked and rooted, running magisk 25.2

Every time i try to restore my TWRP backup (Password/Pin/Patterns have been turned off), I get a bootloop (Rescue Project gets triggered) and I am forced to factory reset before I can actually boot the phone. Problem is, I'd rather avoid losing all my apps and settings... I would also like to avoid having to format data as I have pictures on there i'd like to keep without backup up/restoring.

Anyone willing to lend me a hand please, is there something i'm missing ?

Thanks
[Xiaomi 12S Ultra] NOSS8:
You don't specify which build you are currently on.

The Twrp may be outdated depending on the rom version.

If you make a backup of the system and you restore it on a more recent system, it cannot work, it will only work on the same system.

For apps,settings,mms,sms,call recording,themes,etc, use Micloud.

TWRP: https://xdaforums.com/t/shared-twrp-by-skkk.4489561/
[Xiaomi 12S Ultra] Will.1:
Thanks for taking the time to help me out.

I am on build V13.0.8.0.SLACNXM (Stable), trying to restore a backup of the same system made 2 days ago. Nothing has changed except a Magisk module I installed a couple hours ago.

My TWRP is not as recent as the one you have posted, do you think that could likely be the issue ? I will start there and hopefully that will solve the issue.

Thanks
[Xiaomi 12S Ultra] NOSS8:
The Twrp you used is one of the first for this device and was probably not 100% operational yet.

You can try restoring with a different version but I doubt that will work.

Root can cause this kind of problem and since dynamic+A/B partitions Twrp is not a safe bet. sometimes it works sometimes not.

The apps are easily reinstallable but for the photos it is better to use a cloud or google photo or a third-party app and/or transfer them to the pc as you go.

For the update to V13.0.10.0, unroot then install the Twrp version v6.2_A12 because the V6.3 version had some negative feedback.
[Xiaomi 12S Ultra] dongster:
Hi,

I just bought the Xiaomi 12s ultra. Still on Chinese ROM 13.0.10. if all I want is to enable wireless or wired Android auto, should I flash the eu ROM?

Or use this method https://xdaforums.com/t/gsi-fix-com...1ikj1gC9w1rBxPRHohR0-1666006496-0-gaNycGzNCOU ?

Or any other suggestions?

Thank you.
[Xiaomi 12S Ultra] NOSS8:
The link you post is for GSI roms.

To install a Xiaomi EU rom:

The bootloader must be unlocked

Installed the TWRP

Format the data for a first installation

For Android auto, it seems to work, check here.
[Xiaomi 12S Ultra] dongster:
I see! So either way I need to flash a ROM, then I'll go for eu rom. :)

The link you shared, just to confirm it is the main page of What's New?

Thanks
[Xiaomi 12S Ultra] NOSS8:
To search for Android Auto.
[Xiaomi 12S Ultra] dongster:
Hi, can i check if i am using fastboot method, do i still need to unlock bootloader? i went to the URL http://en.miui.com/unlock/ on my phone and nothing happens. thanks
[Xiaomi 12S Ultra] NOSS8:
method:

https://new.c.mi.com/global/post/101245

https://en.miui.com/unlock/index.html
[Xiaomi 12S Ultra] dongster:
thank you so much. i will now wait for 168 hours. in the meantime, can i disconnect the phone from the PC and boot up to use the phone as per normal?
[Xiaomi 12S Ultra] NOSS8:
yeap,as shown in the tutorial.

Take advantage of this wait to document what you are going to do.;)

BTW:Gsi rom and Xiaomi Eu rom have nothing in common.
[Xiaomi 12S Ultra] dongster:
haha. indeed, 7 days is a long time! exploring the camera and gallery for now. finding out some quirks at the moment, compared to my oppo find x5 pro. :)

thanks!
[Xiaomi 12S Ultra] hennessylieu:
How come the ROM don't support Xiaomi 3T Pro ear buds? 3T Pro don't have Xiaomi App control, but it has will control ANC/NC mode on Xiaomi phone which current ROM don't have control panel.
[Xiaomi 12S Ultra] FAR.:
hello everyone, why whatsapp statuses, namely videos, are slowing down?
[Xiaomi 12S Ultra] TheC92:
https://xiaomi.eu/community/threads/redmi-buds-pro-3-settings.62871/
[Xiaomi 12S Ultra] NOSS8:
Update V13.0.11.0.SLACNXM_v13-12

https://sourceforge.net/projects/xi...files/xiaomi.eu/MIUI-STABLE-RELEASES/MIUIv13/
[Xiaomi 12S Ultra] hennessylieu:
Do you have guide update FW?
[Xiaomi 12S Ultra] NOSS8:
You must have Twrp installed.

https://xdaforums.com/t/shared-twrp-by-skkk.4489561/

Remove lock screen security.

Click on the update icon.

Follow the instructions.
[Xiaomi 12S Ultra] hollabizack12:
My battery drained 15% in a 8 hour night with this update. I did wipe cache en dalvik. Will see if it does stabilize but not a good sign.
[Xiaomi 12S Ultra] egg_n_ham:
Hi there, sorry i am confused about the steps. I am currently waiting for my 12s Ultra to be unlocked. Meanwhile i understand the steps to install are as below:

- Unlock your bootloader by Mi Unlock tool https://en.miui.com/unlock/

- Download our ROM zip file STABLE

- Unpack downloaded zip file in the PC (WinRAR is recommended)

- Reboot your device to fastboot mode (press volume down + power)

- Connect to PC via original USB cable

- Run fastboot installation script as administrator from unpacked zip according your PC operating system

Is there a need to do anything about the TWRP here? Also, i heard the update are pushed via OTA. Is it true?
[Xiaomi 12S Ultra] NOSS8:
Remove lock screen security

You must have Twrp installed.

https://xdaforums.com/t/shared-twrp-by-skkk.4489561/

Use

[BOOT]3.6.2_12-Mi12SUltra_v6.2_A12-thor-skkk_003889f7.zip

.

Twrp

Wipe/format data type yes(if error, red , lines,reboot TWRP and format again)

Reboot TWRP

Put the zip in internal storage or use OTG

Flash rom

First boot takes time.

_________________________________________________________________________________________________________________________

Apart from the 1st rom, no more Fastboot.zip.

Updates are done via OTA.
[Xiaomi 12S Ultra] egg_n_ham:
I see... So you are saying i need to install TWRP first before i flash the EU ROM ya?

Okay, i was just confused earlier because this step wasn't in the OP thread list of steps. I thought twrp was installed as part of the fastboot package
[Xiaomi 12S Ultra] NOSS8:
Indeed this information is not up to date.

But the procedure with the Twrp is more complex than that with the Fastboot rom (first install.bat), you can completely install it then update via OTA by updating the Twrp before.
[Xiaomi 12S Ultra] egg_n_ham:
I understand from you the importance of having the right version of TWRP installed before flashing roms.

See this image i posted here. The author says that 13.0.8.0 fastboot zip includes TWRP. Someone in a forum also claims that he installed the fastboot zip straight away without manually TWRP beforehand. I am guessing because the fastboot zip for 12s Ultra already includes TWRP that allows future OTA updates to the EU rom.

Do correct me if i am wrong. Just trying to clarify this doubt here. Thanks in advance
[Xiaomi 12S Ultra] :
i flashed .8 via fastboot and then i've been updating via twrp (currrenly on .11) that was already in it.
[Xiaomi 12S Ultra] NOSS8:
​

For a first installation how do you do without TWRP?
[Xiaomi 12S Ultra] egg_n_ham:
Beats me too. That's why i suspect TWRP is included in the 13.0.8.0 fastboot zip, and also when the bat file is run, TWRP is installed prior to the actually rom. Since it is a fastboot install, unlike the newer updates which are twrp recovery install, TWRP has to be part of the fastboot zip so future updates could run properly right?

SirTAVARES also affirmed that ya? No issues flashing the fastboot zip and performing OTA updates later - that means TWRP was indeed already installed, in order for the TWRP updates to run later.

I am by no means technical in Android. Just trying to figure out things and learn from the best :)
[Xiaomi 12S Ultra] NOSS8:
In the 13.0.8.0 fastboot zip there is version V5.6A12 of the TWRP.

That's why, it's better to update the TWRP before updating.
[Xiaomi 12S Ultra] egg_n_ham:
Sorry, another silly question here..

If i install twrp version 6.3 first, then install the eu rom that comes with twrp of its own. Will the twrp overwrite / overlap each other?
[Xiaomi 12S Ultra] NOSS8:
Using version 6.2 there was negative feedback with 6.3.

For the rest unimportant just check once the rom is installed which version of Twrp has been installed and possibly update it.
[Xiaomi 12S Ultra] egg_n_ham:
Got it, Thank you sir and all who assisted in this forum!
[Xiaomi 12S Ultra] shirozenx:
Hi all,

I'm new to the forum and I've been reading up quite a bit but this being my first time flashing the rom, I'm still a little confused regarding the steps get the latest ROM for the 12S Ultra.

I'm still waiting for my bootloader to unlock and I want to be sure I wont screw up during the flashing process when I am ready to flash the device. Can I check which method is the correct order to do it?

== Method One ==

1. Download the first available ROM for the 12S Ultra (xiaomi.eu_multi_THOR_V13.0.8.0.SLACNXM_v13-12-fastboot.zip) from https://sourceforge.net/projects/xi...files/xiaomi.eu/MIUI-STABLE-RELEASES/MIUIv13/ and follow the steps for the flashing of ROM for the first time via fastboot mode after I have my bootloader unlocked.

2. Download each of the following updates V13.0.9 through V13.0.11 and update them sequentially via the included TWRP in sequential order.

Questions regarding this method:

Q1: Is the sequential update necessary or can I flash to the latest ROM (v13.0.11) after the flashing of the v13.0.8 ROM? Will the latest ROM be pushed over OTA if i flashed my device using fastboot on v13.0.8?

Q2: Do I still need to update the TWRP to v6.2 via this method? If so, do I do it after flashing the v13.0.8 ROM?

== Method Two ==

1. Download and install v6.2 of the TWRP ([BOOT]3.6.2_12-Mi12SUltra_v6.2_A12-thor-skkk_003889f7.zip) from https://dl.akr-developers.com/?dir=skkk/TWRP/A12/v6.2_A12 after I have my bootloader unlocked.

2. Download and flash latest ROM (xiaomi.eu_multi_THOR_V13.0.11.0.SLACNXM_v13-12.zip) from https://sourceforge.net/projects/xi...files/xiaomi.eu/MIUI-STABLE-RELEASES/MIUIv13/ via TWRP.

Any advice would be appreciated and I hope the responses help other first timers as well. Thanks!
[Xiaomi 12S Ultra] NOSS8:
All the answers to your questions can be found in the posts above.
[Xiaomi 12S Ultra] shirozenx:
Thanks for the reply, I have read the thread a few times over, that's why I have posted my question as I'm confused, there seems to be the two methods and both works?

1. flash 13.0.8 via fastboot and update sequentially to 13.0.11 via twrp as mentioned by SirTAVARES

2. directly installing v6.2 twrp and flashing the latest v13.0.11 via twrp as mentioned by you

just want to be sure if both methods work and if there's a recommended method for flashing for the first time from China ROM. thanks!!
[Xiaomi 12S Ultra] NOSS8:
Both methods work.

Fastboot takes longer.

Flash the latest version with TWRP and you're done.

Twrp 6.2 version

wipe/format data type yes

reboot twrp

put the rom in internal storage or use OTG

flash it
[Xiaomi 12S Ultra] shirozenx:
Thank you so much! Will go with flashing the latest with twrp then. Cheers!
[Xiaomi 12S Ultra] TheC92:
Questions.

In the case of the latest devices, the weekly ROM of the old method (ex. 22.10.28) is not officially released.

Do you have any plans to release a new weekly rom (ex. 13.x.22.10.28.DEV) as eu rom?
[Xiaomi 12S Ultra] NOSS8:
TheC92​

https://xiaomi.eu/community/threads/22-10-26.67225/

Due to beta process adjustments on Xiaomi's side, we will stop releasing "old" Weekly ROMs (22.10.26 is the last "old" Weekly release). Next updates will be based on "new" Weekly releases (like V13.1.22.10.26.DEV) and may include an Android 13 upgrade in near future and new devices.
[Xiaomi 12S Ultra] phibersg:
Same here, latest WhatsApp and 12S Ultra on 13.0.10.0 EU Stable

12S Ultra on 13.0.11.0 EU Stable? How is the battery life now, any updates?
[Xiaomi 12S Ultra] egg_n_ham:
I am on 13.0.11.0 EU. So far so good. Battery can last till end of day with normal use. Not seeing any exceptionally high drain at this point. I don't game. Just using daily apps and driving apps, videos on YouTube, and social media apps as well
[Xiaomi 12S Ultra] phibersg:
Took the plunge literally 5 mins ago and flashed to 13.0.11.0 EU.

Whatsapp video upload stutter is gone so far!

Testing batt life now to see if there is anything abnormal.

Am on the TWRP that came with 13.0.8.0, i didn't remove screen lock.

I used the Updater app to choose update package which i copied in.

When rebooted, it asked me for screen lock PIN, i entered it and it went to update.

Rebooted after that, all went well!
[Xiaomi 12S Ultra] egg_n_ham:
By the way guys, I tried searching for changelog on the EU rom versions, could find it.

Is there any changelogs available for the EU rom for each version?
[Xiaomi 12S Ultra] phibersg:
I think it's the same change log as miui CN:

New: Memory extension is available now

Optimization: System responsiveness

Optimization: Overall responsiveness and performance

Optimization: Optimized power consumption so multiple apps running in the background don`t drain battery

Optimization: Switching between Wi-Fi and mobile data when Wi-Fi connection is weak
[Xiaomi 12S Ultra] egg_n_ham:
Ok cool. I thought EU rom would add a few things here n there sometimes lol
[Xiaomi 12S Ultra] phibersg:
Spoke too soon, the WhatsApp video upload stutter is still there and it seems to be a common issue.

This only happens to 1080p videos, changing my recording to 4k 30p/60p seems to solve the problem.

hopefully someone has a fix!
[Xiaomi 12S Ultra] ukon16:
Anybody having issues flashing this update in twrp?

I always get errors about not being able to mount the /system_root and it exits out twrp.
[Xiaomi 12S Ultra] NOSS8:
Use Ota and latest TWRP.
[Xiaomi 12S Ultra] preseq:
Hi,

I cannot use contactless payment today and got this prompt from google pay: "your phone doesn't meet security requirements". Before that it was working fine.

Did I mess up anything? What can I do to make it work again?

I am on xiaomi.eu 13.0.11
[Xiaomi 12S Ultra] NOSS8:
Check:

play store/settings/about/update play store (if needed)

play protect certification: certified or not?

Miui:

Settings/password and security/lock with fingerprint/payments with fingerprint/widevine L1/payment status?
[Xiaomi 12S Ultra] preseq:
play store/settings/about/update play store (if needed) -> play store is up to date

play protect certification: certified or not? -> certified

Miui:

Settings/password and security/lock with fingerprint/payments with fingerprint/widevine L1/payment status? -> available
[Xiaomi 12S Ultra] NOSS8:
Have you tried uninstalling Gpay and reinstalling it?

EDIT:

Delete all app data (not cache):

google:services framework/play store/google play services

and restart.

Check for updates on the playstore.
[Xiaomi 12S Ultra] preseq:
Have you tried uninstalling Gpay and reinstalling it? -> tried uninstall, install. Also tried clear all data. still the same

Which app are you referring to below?

Delete all app data (not cache):

google:services framework/play store/google play services

and restart.

Check for updates on the playstore.
[Xiaomi 12S Ultra] NOSS8:
Go to settings / app management / installed apps / 3 dots at the top right / display all apps / type google in the search and you will see the apps mentioned above.
[Xiaomi 12S Ultra] preseq:
thanks, clearing all data of google services framework/google play store/google play services works
[Xiaomi 12S Ultra] LotSky11:
Anyone else getting high af charging temps and amps on latest miui eu rom? Mine is charging up to 10000mA and reaching temps of 48c. Once I noticed this I immediately disconnected the stock charger and used a slower power bank instead. Used ampere app to monitor temps and charge rate. Phone is unusually hot to the touch too.
[Xiaomi 12S Ultra] edmondt:
Wish there is no 7 days wait to unlock the bootloader 😭
[Xiaomi 12S Ultra] Kydaix:
I've been waiting 6 days.. I'm almost there 😆

Edit: So I installed and updated the ROM, everything was fine for a day, and since this morning, my phone just restarts itself: it turns off and on at random times. For example, if I start it up, I have time to go to a few apps before it shuts itself down and restarts.

I think I'll have to switch back to the Chinese ROM...
[Xiaomi 12S Ultra] mr2kqql:
Hi, I had purchased one from AliExpress and the seller states it's comes with global rom which I don't really care because I want to flash it to eu rom anyways. I had tried to use it but it won't let me use gpay. Before I make a mess, how to I backup this rom?
[Xiaomi 12S Ultra] phibersg:
What the heck? i didn't even know there was a global rom available! it looks like a very badly hacked rom.

you're better off just flashing the xiaomi.eu rom, no need to backup.

If it fails, flash back to China rom. that is a bad rom!
[Xiaomi 12S Ultra] NOSS8:
Interesting.

This version of rom does not exist.

Try: settings/my device/features/tap several times on kernel version/CIT menu select 1check version info.

Post the screenshot.

EDIT:

Found on Ali.

If there is play store and multilingual.

Surely a Xiaomi Eu rom, they just changed the name and the version.

​
[Xiaomi 12S Ultra] mr2kqql:
Lol. Sorry, didnt have a chance to do a screenshot as I already flashed the EU rom. The bootloader was already unlocked and all I did was followed the steps and everything works now. btw I am coming from a Vivo nex 3s and does xiaomi have some kind of app funtion that duplicate mifare nfc house key lock card like Vivo does?
[Xiaomi 12S Ultra] mititko123:
I think the LTPO2 is not working properly on eu rom currently im on last update 13.0.11 and i can see that the refresh rate is not going to 1fps in main menu or in settings, the frames going only low to 90fps in Facebook and i think this is draining a lot of battery. Could you check on your phones how it is, go in developer settings and enable "show refresh rate" to see do you have this problem as well, thanks
[Xiaomi 12S Ultra] preseq:
My cast screen function did not find the chromecasts in my network. The cast from supported apps e.g. youtube works though. Anyone got similar issues?
[Xiaomi 12S Ultra] edmondt:
Just installed the EU ROM~! I had to flash the unoffical TWRP: https://xdaforums.com/t/xiaomi-12s-ultra-twrp-unofficial.4477393/ because the latest [REC]3.6.2_12-Mi12SUltra_v6.2_A12-thor-skkk_96fff3a9.zip did not work.

https://dl.akr-developers.com/?file...12-Mi12SUltra_v6.2_A12-thor-skkk_96fff3a9.zip
[Xiaomi 12S Ultra] mr2kqql:
All I did was to flash 13.0.8 using fastboot directly after bootloader unlocked and as soon as I setup the phone, I got OTA update to the latest eu version. It's really seamless for me.
[Xiaomi 12S Ultra] edmondt:
That's super smart! I didn't think of flashing an older version with the fastboot