Links to Stock ROM in README.md are broken

[magdesign]

Thanks for this guide!

The links to the ROMs in README are not working anymore, a search in the Internet gave me following links:

oneplus 6 official build 10.3.x

oneplus 6 Android 9 ROMs found here:
OnePlus 6 OxygenOS 9.0.9 | Download
OnePlus 6T OxygenOS 9.0.17 | Download

and the Android 9 rollback firmware is found here

Edit:

Download the rollback firmware, push it to the phone with:
adb push 'fulldowngrade_wipe_MSM_17819_181025_2315_user_MP1_release.zip' /sdcard

Go to Settings > System > System Updates
Push the Gear icon followed by 'Local upgrade'
Select the fulldowngrade package
Confirm
Wait until finished
Reboot (takes a while with spinning circle logo)
Enable developer mode
Enable USB debugging
Use UBPorts installer to flash...

Edit2:

To recover back to Android/or install Android9 via terminal:

Download TWRP3.3.1
newer versions of TWRP did not work for me, but you might test and give feedback...

flash it with:
fastboot boot 'twrp-3.3.1-2-enchilada.img'

Download original Oxygen Android 9 ROM

push this image to the device with:
adb push OnePlus6Oxygen_22_OTA_025_all_1809150101_35981ba3cecc19e.zip /sdcard

in TWRP on the phone select: INSTALL and there select the pushed .zip file
this might take quite a while...

Now you are ready to use Android (first boot takes ages...) or to start installing UBports again.

BTW:
pw is: phablet

[svenha]

Has anybody tried this for the McLaren edition? I guess the 6T version would be the more promising candidate?