As someone in IT people do the same thing. Specifically as a favor I managed to get a crappy Samsung on a up to date version of LineageOS (through a GSI). For some reason it had a very specific problem that you cant do recovery though the OS so I installed teamwin. I tell this person “ok this phone isnt secure, dont put info on it. Also dont reset through LineageOS”. Well guess what, he did that anway and I ofc fixed it.
As someone in IT people do the same thing. Specifically as a favor I managed to get a crappy Samsung on a up to date version of LineageOS (through a GSI). For some reason it had a very specific problem that you cant do recovery though the OS so I installed teamwin. I tell this person “ok this phone isnt secure, dont put info on it. Also dont reset through LineageOS”. Well guess what, he did that anway and I ofc fixed it.
Oh my god, GSIs. I used a phone with a GSI for a month. More than that would just make me kill myself.
The person needed it working quickly unti he can get a new one