I wanted to switch from my pixel 3a to my oneplus 6 for daily driving postmarketOS.

The pmbootstrap flasher kept failing cause there was no space. I tried reinstalling oxygenos and switching to pmOS 3 times - same issue. Then, I removed the pmOS partitions via twrp which bricked the device. So I had to use a windows only tool to fix it but the download links were all deadlinks. At 3 am I managed unbrick the phone. I have lived this again: https://www.explainxkcd.com/wiki/index.php/349:_Success