So this tool is not really about decrypting anything right ?
You basically flash that to disable force encryption, wiping everything in the process, thus allowing full TWRP features to work.
Assuming the said zip works
I remember back in the days - I’m talking Samsung Galaxy S2/3 days - it was common to disable forced encryption as it would notably speed up the device. I’m not sure what would be the point of disabling encryption nowadays (well except when you need to use a TWRP that cannot decrypt your device ofc )
Similar here on FP4 /e/OS. fastboot boot twrp.img causes phone to be stuck at the logo in boot up. Issuing the same command again creates a bootloop. It’s only possible to leave the bootloop (and successfully start the system) by going into bootloader/fastboot again and issuing fastboot set_active a command and start system then.
TWRP site says not to do it, but the only thing that worked was to flash the image first and then i could go into TWRP recovery. I did not installed it from the zip file because to do so I had to chose which partition to install on, and i did not find anything with google. But after reboot i can boot into TWRP again without problems.
These links look like the ton of auto-generated content you can find on the web.
The device article related page is automatically filling a template with [device_name].
Generally speaking for the FP4, I’d say given the amount and the quality of the passionate people on this forum, if any method to do anything is somewhere, it’d be here. Even XDA forums can’t compete. So I’d have some doubts towards any information provided in random android blogs