How to install UT on a device currently running mobian?

CyBerT

Oh! Maybe I could flash Android 9 exactly!

Dieter42

@CyBerT
Yes, I know this Problem - you can with the fastbootrom flash the Andriod 9 Version from onplus 6 (6t similar)

fastbootrom for 6t
https://sourceforge.net/projects/fastbootroms/files/OnePlus 6T/9.0.16-OnePlus6TOxygen_34_OTA_023_all_1908012014_8351a8c9cfd42-FASTBOOT.zip/download

fastbootrom for 6
https://sourceforge.net/projects/fastbootroms/files/OnePlus 6/9.0.9-OnePlus6Oxygen_22_OTA_034_all_1909112343_dd26-FASTBOOT.zip/download

Use fastboot and change into the folder with unzip "imges.zip" - its one of the subfolders.

Step1

fastboot -w

Step2

fastboot flash aop_a aop.img &&
fastboot flash aop_b aop.img &&

fastboot flash bluetooth_a bluetooth.img &&
fastboot flash bluetooth_b bluetooth.img &&

fastboot flash boot_a boot.img &&
fastboot flash boot_b boot.img &&

fastboot flash dsp_a dsp.img &&
fastboot flash dsp_b dsp.img &&

fastboot flash dtbo_a dtbo.img &&
fastboot flash dtbo_b dtbo.img &&

fastboot flash fw_4j1ed_a fw_4j1ed.img &&
fastboot flash fw_4j1ed_b fw_4j1ed.img &&

fastboot flash fw_4u1ea_a fw_4u1ea.img &&
fastboot flash fw_4u1ea_b fw_4u1ea.img &&

fastboot flash modem_a modem.img &&
fastboot flash modem_b modem.img &&

fastboot flash oem_stanvbk oem_stanvbk.img &&

fastboot flash qupfw_a qupfw.img &&
fastboot flash qupfw_b qupfw.img &&

fastboot flash storsec_a storsec.img &&
fastboot flash storsec_b storsec.img &&

fastboot flash system_a system.img &&
fastboot flash system_b system.img &&

fastboot flash vbmeta_a vbmeta.img &&
fastboot flash vbmeta_b vbmeta.img &&

fastboot flash vendor_a vendor.img &&
fastboot flash vendor_b vendor.img

Step 3
Start Smartphone from bootloader

The oneplus start in Android 9 Stockrom!
Finish - you can install a recovery or other ...

CyBerT

@Dieter42 Ok first I would like to try something else then I will come back to fastboot.

But first after installing Android 9 I try to install UT with installer and when it finishes I get stuck at boot screen.

CyBerT

And I get stuck at boot screen because newer version of UT does not work with OP 6, and that is why I flashed mobian in the first place!!!

CyBerT

@Dieter42 Ok back to this particular fastboot issue; could I leave the bootloader as it is and flash UT on a and Mobian on b? Would I be able to boot both? List of commands would be much appreciated.

Dieter42

@CyBerT For Multiboot Check out this link:
https://wiki.postmarketos.org/wiki/OnePlus_6_(oneplus-enchilada)/Multi_Booting_and_Custom_Partitioning#Dual_booting_pmos_with_other_uefi_based_os_(like_openbsd_,_netbsd_,_freebsd,windows,etc)_via_Renegade_Project

CyBerT

Great so we can mark this thread as SOLVED!

Thanks Guys.

DJac

hello, @dieter42
I meet the same probleme.
So I tried to made the fastboot flash, but i received this answer :

Sending 'aop_a' (180 KB) OKAY [ 0.010s]
Writing 'aop_a' FAILED (remote: 'Flashing is not allowed for Critical Partitions')
fastboot: error: Command failed

Perhaps i miss something...

Dieter42

@DJac Which distribution did you use ? I use Manjaro, before I have try with Ubuntu and I get the same Problem.

DJac

I am on Debian13.
but I have also problems to instal UBports.
I will try with Mint later (but it is a debian disto too).
you think it could come from the PC ?
I will try on windows (msmbootloader) but I can't install the drivers...