Impressive! Thank you so much!
Here is a general question. If one uses TWRP in order to create a backup and one selects “System Image”, will one get a perfect stock image that one can trust, in case of device bricking? I went through the FAQ here: https://twrp.me/faq/whattobackup.html, a “Vendor image” seems to be proposed for some devices (obviously not for FP3, at least not yet), but nowhere can I find precise information on what exactly is backed up.