Is you followed the XDA guide to unlock the sprint 20j version?How can one make a package? I'm on sprint 20j December, unlocked bootloader and magisk. I never installed twrp, because the links don't work here. I wanted to use twrp, booting using adb, instead of installing it which might make ota difficult.
Qfil lets me dump partitions but I'm not sure how to automate it, there's tons!