I successfully installed postmarketOS now and I'm absolutely happy until now.
Everything works smoothly. I am writing this answer right now with the Pinetab.
About Mobian:
I was able to flash the latest version before tow boot came up. The tablet booted fine. I then run updates and after that, the Pinetab wouldn't reboot. I tried all that twice, but after the installation of updates it didn't come up again. I just heard some buzzing noises and hoped the device is ok and nothing burned up.
After that I chose postmarketOS for two reasons: First, they offer a current build without the need for tow boot and second, I'm running pmOS on my Pinephone, too.
After the first update it booted normally again.
I hope, I found my final solution since I don't want to mess around so much again. Pinephones were way easier but I know, not many Pinetabs have been sold so there's way less information and experience.
Thanks for your help
Everything works smoothly. I am writing this answer right now with the Pinetab.
About Mobian:
I was able to flash the latest version before tow boot came up. The tablet booted fine. I then run updates and after that, the Pinetab wouldn't reboot. I tried all that twice, but after the installation of updates it didn't come up again. I just heard some buzzing noises and hoped the device is ok and nothing burned up.
After that I chose postmarketOS for two reasons: First, they offer a current build without the need for tow boot and second, I'm running pmOS on my Pinephone, too.
After the first update it booted normally again.
I hope, I found my final solution since I don't want to mess around so much again. Pinephones were way easier but I know, not many Pinetabs have been sold so there's way less information and experience.
Thanks for your help