Development [TB-J716F] (Unofficial) TWRP for Lenovo Xiaoxin Pad Pro 2021

[gunalarix8]

i managed to install twrp and root with magisk, however i broke my partition B when tried to install gsi from fastbootd. good work @Ungeskriptet

 

[Ungeskriptet]

i managed to install twrp and root with magisk, however i broke my partition B when tried to install gsi from fastbootd. good work @Ungeskriptet

That's weird cause one of my partitions is also broken. I haven't yet looked into it.

 

[gunalarix8]

@Ungeskriptet i had problem to restore my twrp backup, it shows slide restore only. Any idea on how to restore my backup?

 

[toystory2000]

May I know the details of install Magisk and should select slot a or b, thanks

 

[Tropaion]

@Ungeskriptet Which GSI do you use? Do you also have problems with Autobrightness and
rotation orientation? Did you create a overlay?

 

[Ungeskriptet]

@Ungeskriptet Which GSI do you use? Do you also have problems with Autobrightness and
rotation orientation? Did you create a overlay?

I use the Lineage OS GSI, with the issues everybody has.
And no, I didn't create an overlay. Might try tho

 

[russy23]

I use the Lineage OS GSI, with the issues everybody has.
And no, I didn't create an overlay. Might try tho

Is there no way to flash persist.img to sort these issues out or is this not related

 

[Ungeskriptet]

May I know the details of install Magisk and should select slot a or b, thanks

You should be able to just flash it in TWRP. If you haven't messed up your A/B partitions like me it doesn't matter which one you select as long as your system boots.

 

[russy23]

Has anybody tried using TWRP to flash a gsi yet?

 

[chococomaxim]

For now I'm using the GSI, but I do want to eventually port LineageOS to it (I have only little experience so this could take a long time). I'd also like to get mainline Linux booting on this tablet, since SD865 is supported in Linux and SD870 is an overclocked SD865.

EDIT: I've been using the GSI for some time now and the performance is great. I'll try looking into the issues the GSI has because if the GSI works good there's no need to make a new and seperate LineageOS port. I would need to learn how to do that first though so it can take some time.

Random, but how does one learn porting/ROM dev? It is something that has been interesting me recently so I was wondering if you could point me in a general direction on how to get started/learn more about it?

 

[Ungeskriptet]

Has anybody tried using TWRP to flash a gsi yet?

fastbootd works so flashing should work too, haven't tested it though.

 

[miserable_De]

For now I'm using the GSI, but I do want to eventually port LineageOS to it (I have only little experience so this could take a long time). I'd also like to get mainline Linux booting on this tablet, since SD865 is supported in Linux and SD870 is an overclocked SD865.

EDIT: I've been using the GSI for some time now and the performance is great. I'll try looking into the issues the GSI has because if the GSI works good there's no need to make a new and seperate LineageOS port. I would need to learn how to do that first though so it can take some time.

https://maruos.com/ Hey, I found that this project may be more convenient for running Linux to Android

 

[Ungeskriptet]

https://maruos.com/ Hey, I found that this project may be more convenient for running Linux to Android

MaruOS is a custom ROM for running Linux on top of Android. My goal is to ditch Android completly and run Linux natively by using a mainline Linux kernel. Someone already managed to run mainline Linux v5.15 on a Mi Pad 5 Pro with SD870 so we can (someday, when everything will work) use this tablet as a normal Linux PC.

https://github.com/lujianhua/xiaomi_elish_stable_kernel/

 

[imankhamse]

I have the same tablet and have the same wish as you
please look at the jingOS

JingOS | Future Mobile OS based on Linux - JingLing - JingOS

JingOS is a ‘convergent’ Linux-Based Open-Source OS for future tablets&laptops.It is a product of JingLing Tech. JingPad A1 is the World’s FIRST Consumer-level ARM-based Linux Tablet.

en.jingos.com

and efidroid project
Ithink its a UEFI for android and can load grub witch is start of linux

EFIDroid

EFIDroid has 39 repositories available. Follow their code on GitHub.

github.com

I may not be good like you but I would be happy to cooperate on this

 

[Ungeskriptet]

I have the same tablet and have the same wish as you
please look at the jingOS

JingOS | Future Mobile OS based on Linux - JingLing - JingOS

JingOS is a ‘convergent’ Linux-Based Open-Source OS for future tablets&laptops.It is a product of JingLing Tech. JingPad A1 is the World’s FIRST Consumer-level ARM-based Linux Tablet.

en.jingos.com

and efidroid project
Ithink its a UEFI for android and can load grub witch is start of linux

EFIDroid

EFIDroid has 39 repositories available. Follow their code on GitHub.

github.com

I may not be good like you but I would be happy to cooperate on this

The kernel has to be mainlined first (sadly there are no downstream kernel sources which will make this a bit harder). Once the kernel has been mainlined you can use any distro which has an aarch64 (ARM64) version available. EFIDroid is no longer maintained and is also not needed. We can simply put the kernel in the boot partition and boot it that way.

 

[Ungeskriptet]

i managed to install twrp and root with magisk, however i broke my partition B when tried to install gsi from fastbootd. good work @Ungeskriptet

It could be possible that while flashing/updating/messing with the tablet, the super partition got corrupted:

╭─[email protected] ~/Downloads
╰─$ imjtool super.bin
liblp dynamic partition (super.img) - Blocksize 0x1000, 3 slots
LP MD Header @0x3000, version 10.2, with 10 logical partitions on block device of 4096 GB, at partition super, first sector: 0x800
    Partitions @0x3100 in 3 groups:
        Group 0: default
        Group 1: qti_dynamic_partitions_a
            Name: system_a (read-only, Linux Ext2/3/4/? Filesystem Image, @0x100000 spanning 1 extents and 3 GB)
            Name: system_ext_a (read-only, Linux Ext2/3/4/? Filesystem Image, @0xc4f00000 spanning 1 extents and 255 MB)
            Name: product_a (read-only, Linux Ext2/3/4/? Filesystem Image, @0xd4f00000 spanning 1 extents and 403 MB)
            Name: vendor_a (read-only, Linux Ext2/3/4/? Filesystem Image, @0xee300000 spanning 1 extents and 689 MB)
            Name: odm_a (read-only, Linux Ext2/3/4/? Filesystem Image, @0x119500000 spanning 1 extents and 1008 KB)
        Group 2: qti_dynamic_partitions_b
            Name: system_b (read-only,  empty)
            Name: system_ext_b (read-only,  empty)
            Name: product_b (read-only,  empty)
            Name: vendor_b (read-only,  empty)
            Name: odm_b (read-only,  empty)

This is from my tablet when I still had ZUI 13. Maybe it would be possible to dump the working slot from the super partition and flash it in fastbootd mode?

EDIT: Seems like it's the same for the super partition from the EDL/QPST-Firmware. I did flash my tablet with EDL so it's most likely this issue.

Spoiler: imjtool super.img

╭─[email protected] /mnt/1TB_HDD/Android/lenovo-tbj716f/TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_12.6.211_ST_210730_qpst
╰─$ imjtool super.img 
liblp dynamic partition (super.img) - Blocksize 0x1000, 3 slots
LP MD Header @0x3000, version 10.2, with 10 logical partitions on block device of 4096 GB, at partition super, first sector: 0x800
    Partitions @0x3100 in 3 groups:
        Group 0: default
        Group 1: qti_dynamic_partitions_a
            Name: system_a (read-only, Unknown, @0x100000 spanning 1 extents and 3 GB)
            Name: system_ext_a (read-only, Unknown, @0xc4f00000 spanning 1 extents and 255 MB)
            Name: product_a (read-only, Unknown, @0xd4f00000 spanning 1 extents and 403 MB)
            Name: vendor_a (read-only, (image truncated - won't try fs detection), @0xee300000 spanning 1 extents and 689 MB)
            Name: odm_a (read-only, (image truncated - won't try fs detection), @0x119500000 spanning 1 extents and 1008 KB)
        Group 2: qti_dynamic_partitions_b
            Name: system_b (read-only,  empty)
            Name: system_ext_b (read-only,  empty)
            Name: product_b (read-only,  empty)
            Name: vendor_b (read-only,  empty)
            Name: odm_b (read-only,  empty)

EDIT 2: Pulled the current super partition from my tablet and now the A partition is completely gone?

Spoiler: system_b-cow??

╭─[email protected] ~/Downloads
╰─$ imjtool super.img      
liblp dynamic partition (super.img) - Blocksize 0x1000, 3 slots
LP MD Header @0x3000, version 10.2, with 6 logical partitions on block device of 4096 GB, at partition super, first sector: 0x800
    Partitions @0x3100 in 3 groups:
        Group 0: default
        Group 1: qti_dynamic_partitions_b
            Name: system_b (read-only, Linux Ext2/3/4/? Filesystem Image, @0x100000 spanning 1 extents and 3 GB)
            Name: system_ext_b (read-only, Linux Ext2/3/4/? Filesystem Image, @0xc4f00000 spanning 2 extents and 255 MB)
            Name: product_b (read-only, Unknown, @0xd5000000 spanning 1 extents and 403 MB)
            Name: vendor_b (read-only, Unknown, @0xee400000 spanning 1 extents and 689 MB)
            Name: odm_b (read-only, Unknown, @0x119600000 spanning 2 extents and 1008 KB)
        Group 2: cow
            Name: system_b-cow (Unknown, @0x119800000 spanning 1 extents and 3 GB)

 

[gunalarix8]

It could be possible that while flashing/updating/messing with the tablet, the super partition got corrupted:

╭─[email protected] ~/Downloads
╰─$ imjtool super.bin
liblp dynamic partition (super.img) - Blocksize 0x1000, 3 slots
LP MD Header @0x3000, version 10.2, with 10 logical partitions on block device of 4096 GB, at partition super, first sector: 0x800
    Partitions @0x3100 in 3 groups:
        Group 0: default
        Group 1: qti_dynamic_partitions_a
            Name: system_a (read-only, Linux Ext2/3/4/? Filesystem Image, @0x100000 spanning 1 extents and 3 GB)
            Name: system_ext_a (read-only, Linux Ext2/3/4/? Filesystem Image, @0xc4f00000 spanning 1 extents and 255 MB)
            Name: product_a (read-only, Linux Ext2/3/4/? Filesystem Image, @0xd4f00000 spanning 1 extents and 403 MB)
            Name: vendor_a (read-only, Linux Ext2/3/4/? Filesystem Image, @0xee300000 spanning 1 extents and 689 MB)
            Name: odm_a (read-only, Linux Ext2/3/4/? Filesystem Image, @0x119500000 spanning 1 extents and 1008 KB)
        Group 2: qti_dynamic_partitions_b
            Name: system_b (read-only,  empty)
            Name: system_ext_b (read-only,  empty)
            Name: product_b (read-only,  empty)
            Name: vendor_b (read-only,  empty)
            Name: odm_b (read-only,  empty)

This is from my tablet when I still had ZUI 13. Maybe it would be possible to dump the working slot from the super partition and flash it in fastbootd mode?

EDIT: Seems like it's the same for the super partition from the EDL/QPST-Firmware. I did flash my tablet with EDL so it's most likely this issue.

Spoiler: imjtool super.img

╭─[email protected] /mnt/1TB_HDD/Android/lenovo-tbj716f/TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_12.6.211_ST_210730_qpst
╰─$ imjtool super.img   
liblp dynamic partition (super.img) - Blocksize 0x1000, 3 slots
LP MD Header @0x3000, version 10.2, with 10 logical partitions on block device of 4096 GB, at partition super, first sector: 0x800
    Partitions @0x3100 in 3 groups:
        Group 0: default
        Group 1: qti_dynamic_partitions_a
            Name: system_a (read-only, Unknown, @0x100000 spanning 1 extents and 3 GB)
            Name: system_ext_a (read-only, Unknown, @0xc4f00000 spanning 1 extents and 255 MB)
            Name: product_a (read-only, Unknown, @0xd4f00000 spanning 1 extents and 403 MB)
            Name: vendor_a (read-only, (image truncated - won't try fs detection), @0xee300000 spanning 1 extents and 689 MB)
            Name: odm_a (read-only, (image truncated - won't try fs detection), @0x119500000 spanning 1 extents and 1008 KB)
        Group 2: qti_dynamic_partitions_b
            Name: system_b (read-only,  empty)
            Name: system_ext_b (read-only,  empty)
            Name: product_b (read-only,  empty)
            Name: vendor_b (read-only,  empty)
            Name: odm_b (read-only,  empty)

I managed to repartition and flash the images manually. However, I could not fix widevine status f3, if im not mistaken, it was affected by modem/persist/efs partition. I managed to backup using TWRP and restore function is ok. But i got bootloop after restore .

 

[bobochacha]

Hi, i'm a newbie in configuring android devices. I've downloaded android filehost and the device tree from the link but what am i supposed to do in order to install TWRP? I've enabled OEM unlocking as well as USB debugging. When i go into bootloader i don't see anything that says "Flash recovery". Could anyone kindly guide or provide me steps into installing TWRP? Greatly appreciate the help if can! Thanks!

 

[rosco_pc]

Hi, i'm a newbie in configuring android devices. I've downloaded android filehost and the device tree from the link but what am i supposed to do in order to install TWRP? I've enabled OEM unlocking as well as USB debugging. When i go into bootloader i don't see anything that says "Flash recovery". Could anyone kindly guide or provide me steps into installing TWRP? Greatly appreciate the help if can! Thanks!

you need to get ADB and fastboot tools installed on your computer. Then you can follow the commands as stated in the 1st post

 

[bobochacha]

you need to get ADB and fastboot tools installed on your computer. Then you can follow the commands as stated in the 1st post

Thank you very much for the guidance. I've downloaded the tools as you said and managed to send commands to the tablet but i'm stuck at the flash recovery command. It says waiting for device but on my device but i don't see any confirmation on my tablet. What am i supposed to do from here?