[UNLOCK bootloader, and flash ROM with ROOT] Huawei MediaPad M5 Pro - EMUI 9.1 - 2021

[massima]

@air32 and @viva-yo , have you ever contacted Pierre Hugues Husson of his official telegram channel? Are you using latest phh treble v414?

 

[viva-yo]

@air32 and @viva-yo , have you ever contacted Pierre Hugues Husson of his official telegram channel? Are you using latest phh treble v414?

I´m using the phh of the op

 

[air32]

Yes, months ago we had a discussion in the telegram group, with another member who did a workaround. Sadly phh was not really interested in solving this issue, so nothing happend.

 

[viva-yo]

Most of the img i try to flash are giving me this error:
"
target reported max download size of 471859200 bytes
Invalid sparse file format at header magi"
phh, lineage, crdroid, all give me that error
Only could flash this one:
system-quack-arm64-ab-gapps.img

Any help?
Thx

 

[massima]

Most of the img i try to flash are giving me this error:
"
target reported max download size of 471859200 bytes
Invalid sparse file format at header magi"
phh, lineage, crdroid, all give me that error
Only could flash this one:
system-quack-arm64-ab-gapps.img

Any help?
Thx

Probably those images are too big to fit in the system partition, only the gapp "non vndk" and vanilla versions can fit. It is only 2,9Gb if i remember correctly, you could resize it anyway (i never did it).

 

[viva-yo]

Probably those images are too big to fit in the system partition, only the gapp "non vndk" and vanilla versions can fit. It is only 2,9Gb if i remember correctly, you could resize it anyway (i never did it).

Thanks. I solved it by using a updated version of fastboot tools
The problem I have now is that I dont have root. (and I have tested several ROMs: lineage, phh,.,..)
This is the steps I follow:
- factory reset ( in android and in recovery)
- erase system in bootloader
- flash ROM in bootloader
- flash vbmeta in bootloader ( fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img)
- wipe data and cache in recovery

The ROM is installed with SU app, but I dont have root (at least that says adaway)

 

[massima]

Thanks. I solved it by using a updated version of fastboot tools
.........
The ROM is installed with SU app, but I dont have root (at least that says adaway)

All the GSI are derivate from the Phh treble. Adaway doesn't work because it cannot write onto the system partition, it is in RO mode. You have two ways, the first is to use magisk (Systemless mode for Adaway) but GSI images don't like magisk, test it. The second is to use the vndk variant but they are too big for our M5 as i wrote above.

 

[viva-yo]

All the GSI are derivate from the Phh treble. Adaway doesn't work because it cannot write onto the system partition, it is in RO mode. You have two ways, the first is to use magisk (Systemless mode for Adaway) but GSI images don't like magisk, test it. The second is to use the vndk variant but they are too big for our M5 as i wrote above.

I could obtain root flashing system-squeak-arm64-ab-vndklite-gapps.img from here:

Release AOSP 12.1 v414 · phhusson/treble_experimentations

June security patch level Add an option to control under-display fingerprint color Fix 1s transition time (Thanks @haridhayal11 ) Fix in-call audio fails after some time and others

github.com

Now adaway works perfectly, but I can´t install vanced because I dont have magisk This is endless

 

[massima]

@viva-yo , the treble project is great expecially for unsupported devices (ROMs, TWRP) like our M5 but i prefer the canonical way with custon ROMs, TWRP, etc.
If you flash gapps-vndk-secure you won't have root so you could flash magisk.
Will it be another mess?

 

[viva-yo]

@viva-yo , the treble project is great expecially for unsupported devices (ROMs, TWRP) like our M5 but i prefer the canonical way with custon ROMs, TWRP, etc.
If you flash gapps-vndk-secure you won't have root so you could flash magisk.
Will it be another mess?

How do you get a good layout in the apps for our tablet? Did you change the smallest width of any other option in developer settings?

 

[massima]

How do you get a good layout in the apps for our tablet? Did you change the smallest width of any other option in developer settings?

Nothing, i left all with defaut values except for fast charging.

 

[viva-yo]

Nothing, i left all with defaut values except for fast charging.

doesn´t the layout of apps like youtube , with only one column, look awful and useless on our tablet for you?

 

[sbfisher]

I guess this is the testpoint on your device, as it looks different than on mine: Huawei-MediaPad-M5-SHT-AL09-SHT-W09-Testpoint.jpg

In order to find the testpoint that is pictured for the SHT-W09, you have to remove a bunch of screws at the top of the device, disconnect the screen cables, the side button cables, some other cable near the button cable (maybe speaker or vibrator), the camera cable and a bunch of screws along the top. Then there is a board that fits around a black square and the board takes up most of the top of the device that you need to flip over. It took me hours to figure out all the things to disconnect and to flip the board over in order to see something that looks like the picture of the supposed test point. If you do all that then the photo looks the same as that board once you flip it over.

I still can't get it to work with shorting the test point to the shield. It looks like their red line goes between a silver indentation to the nearest shield. Does that seem right, or should it be one of the smaller copper or gold-colored dots?

 

[sbfisher]

For anyone still looking to get the testpoint to activate on the SHT-W09, this image makes it much more clear what point you should short to the shield. https://forum.gsmhosting.com/vbb/f1...set-done-test-point-uni-android-tool-2976508/ . (the lavendar dots on the photo.) The more common photo that is everywhere in search engines has a big red line that is kind of unclear what it's pointing at (top dot? middle silver bit? bottom dot?)

I also had to disconnect the black cable coming from the battery area and only leave the tan-colored wire coming from the USB port connected. I got the boot loader unlocked now, so maybe I can breathe new life into this old device that rarely got updates. I wish the Lenovo Y700 was being sold normally in the US since there aren't a lot of 8-9 inch tablets these days and I don't really want to buy an iPad mini, a low resolution kids tablet or a the weird "global firmware" edition of the Y700 which seems to be kind of half-baked.

 

[stefcio102]

I do everything in first post but when flash system and reboot, still go to erecovery. Wipe and factory reset dont fix it

CMR-W19 8.0.0.200 C567

 

[RobZen77]

Having a CMR-W09 with testpoint and Potato NV the bootloader unlocked but for almost one week was trying to get rid of the FRP lock . Ended up getting rid of the lock by flashing CMR-W09_hw_eu with Android 9.0. now I have the TWRP vtr3.2.1.0-v0.4. At least for me this recovery remained even after flashed the Android 9. Dont forget the button combinations.
Put official ROM on SD card in folder dload , turn tablet off keep Volume up and Volume down pressed together with Power botton. When Huawei logo comes up, release Power button and the ROM will be flashed.
Few tips when in TWRP you get failed to mount '/vendor '/cust '/odm etc. Get to Wipe in TWRP >Advanced Wipe >Repair or Change File System and select the partition can not be mounted >Change file system> select EXT2 > after that select EXT4, now that partition can be mounted again. The only you can not repair here ist the '/odm . For that solution is Huawei Update Extractor found here >https://xdaforums.com/t/tool-huawei-update-extractor-updated-v0-9-9-5-open-source-library.2433454/ Extract the ODM.img from original ROM into the ADB folder and flash it on fastboot > fastboot flash odm ODM.img
One tip.... you dont have to use command > fastboot reboot , just keep volume up and power button> release power when Huawei logo comes up, so you will not have the custom recovery replaced with erecovery. That especially when you dont have all workj done in custom recovery and you dont want to lose it.