How To Guide [Tool] Flash Custom ROMs through Fastboot [mojito / sunny]

[Samir2298]

Do you think the phone got encrypted in someway? Because when I was doing the flashing stuff I got lots of folders with weird names on the internal storage like the picture below(this is not mine but just the example of what I'm saying). They got deleted tho after I formatted data partition.

 

[slickw]

I got same error partition is too small but after flashing wit errors rom booted and works without problems.
Device is sunny rom is xiaomi eu.
I tought it was normal error since 8t didnt cause any problems

 

[MPK99]

I already did everything from scratch. By that I mean flashed MIUI thro MI Flashtool, locked bootloader and started all over again and also redownloaded the ROM(crdroid) but the problem is still there.

I did try other roms not through the fastboot tool but TWRP. And I get errors.

2021/10/05 is not my build, but the new maintainer's. Try my previous builds or other roms & let me know.

 

[Samir2298]

I got same error partition is too small but after flashing wit errors rom booted and works without problems.
Device is sunny rom is xiaomi eu.
I tought it was normal error since 8t didnt cause any problems

Mine does boot also but I get errors like "SystemUI has stopped" and also wifi doesnt work. Plus I can't flash/sideload gapps thro TWRP or other recoveries.

 

[Samir2298]

2021/10/05 is not my build, but the new maintainer's. Try my previous builds or other roms & let me know.

Well I flashed MIUI again and followed the Pixel Experience guide from here: https://telegra.ph/Pixel-Experience-MojitoSunny-04-17 But still I got errors. Take a look at screenshot.

Edit: I just tired PE with fastboot tool, got same error "Boot partition is smaller than boot image"

 

[akoaypinoy]

Well I flashed MIUI again and followed the Pixel Experience guide from here: https://telegra.ph/Pixel-Experience-MojitoSunny-04-17 But still I got errors. Take a look at screenshot.

Edit: I just tired PE with fastboot tool, got same error "Boot partition is smaller than boot image"

Did you try clean flash by mi flash tool? I've encounter that when I install lineageOS. Maybe similar on crdroid. I think you need clean flash by mi flash tool. In order to do that you must flash with Lock. Then unlock again bootloader . In mi flash I'm surely encounter you this on mi flash tool "metadata is not allowed on snapshot state" to fix that go to cmd and type this command

fastboot devices

Then

fastboot snapshot-update cancel


After that go back to mi flash tool and start the process to clean flash and lock.

Once you install rom like crdroid or lineageOS

Surely it happen for that... I don't know why it happen but I'll experience on that matter.

 

[MPK99]

-------------------------------------------------
Changelog (2021-10-31):
-------------------------------------------------
- Fixed extraction issues
- Updated fastbootd to 12.5.3
- Implemented snapshot update-cancel
- Partition size limit warning in linux/mac script
- Logfile auto generation in linux/mac script

 

[akoaypinoy]

-------------------------------------------------
Changelog (2021-10-31):
-------------------------------------------------
- Fixed extraction issues
- Updated fastbootd to 12.5.3
- Implemented snapshot update-cancel
- Partition size limit warning in linux/mac script
- Logfile auto generation in linux/mac script

nice update sir,,

 

[munimjaffer]

Because of this tool my Wifi and sound isn't working. I can't even flash any other ROM in recovery. Unable to flash fastboot ROM in mi flash tool as well. Please help !

 

[sahbimath]

Because of this tool my Wifi and sound isn't working. I can't even flash any other ROM in recovery. Unable to flash fastboot ROM in mi flash tool as well. Please help !

I didn't check yet whether i'm able to go back to stock through mi flash, but i can't install anything through twrp or orange fox, not even adb sideloading works i guess, i'll try flashing a fastboot rom n ill go back again

 

[munimjaffer]

I didn't check yet whether i'm able to go back to stock through mi flash, but i can't install anything through twrp or orange fox, not even adb sideloading works i guess, i'll try flashing a fastboot rom n ill go back again

and how would u flash a fastboot rom? I'm using mi flashtool and it gives me this error

 

[sahbimath]

and how would u flash a fastboot rom? I'm using mi flashtool and it gives me this errorView attachment 5500771

i just download an old fastboot xiaomi eu rom and that fixed my problem

 

[DTFuser]

With two different ROMs (PE 1.2 and official 12.5.4) i got the same error:"FAILED (remote:"Could not open super partition"). Then I tried with official MiFlash tool and I also got error while writing super partition "error: write_sparse_skip_chunk: don't care size 4254...) then I tried the third way. I tried to flash ROM from TWRP and that also failed because TWRP are unresponsive (like touchscreen is not working) and I cannot chose anything from opening menu.
Any suggestion on how to fix super partition or how to install any ROM, either from fastboot or from working recovery will be appreciated.

 

[nierewa]

I use cDroid 7.12 Version 2021117.
I want to update with TWRP (3.6.0_11-0) but get an error:

Error applying update: 7 /ErrorCode:: kInstallDeviceOpenError)
Device on super may not mount until rebooting recovery.

A help was this answer:

If you have flashed with OTA script before then go back to miui and come back bcoz partition layout of your device is messed up

Is there a fix for it?

 

[StaryMuz]

You quoted what you're supposed to do.:"... before then go back to miui ..."
Thus MiFlash, the "clear all" option.

 

[nierewa]

That would mean that I would have to flash Miui every time I update cDroid to be able to do this with TWRP.

A flash memory can not be rewritten forever again and again.
The last time I flashed MIUI for cDroid 8 ROM I got the message: " Gerätespeicherbeschädigung festgestellt. Das Gerät ist jetzt unsicher."

Is there no other way?

 

[StaryMuz]

You worry about memory wear unnecessarily. It is electronic memory and writing to it wears it out just as much as reading.
Trying to use TWRP all the time is wrong. Each ROM lists its own optimal upload and it is not always TWRP. For now, there is no perfect custom recovery and therefore a MiFlash cleanup may be necessary after some steps.
Plus, moving from a lower to a higher version of Android needs a clean new foundation.

 

[nierewa]

Plus, moving from a lower to a higher version of Android needs a clean new foundation.

Hmm, ok.

 

[xlegitmuheminx]

Hello Bro I want to know how to use fastboot OTA tool in linux I newly install it

 

[MPK99]

Hello Bro I want to know how to use fastboot OTA tool in linux I newly install it

Did you read main thread for guide?
Keep a ROM in the extracted directory & do

./flash_linux.sh

That's it. Make sure your distro has python libraries installed.