You're melting my mind. There is no AirNote4C, it's NoteAir4C.
It has the distinction of having 3 updates currently.
Code:
Model: NoteAir4C (English)
Finger: Onyx/NoteAir4C/NoteAir4C:11/2025-01-09_20-02_4.0_43a9adea0/2009:user/release-keys
Link: http://firmware-us.boox.com/91defa9bf4fb9d94d7d85398c7b4b354/update.upx
Size: 1,932,759,570
MD5: 91defa9bf4fb9d94d7d85398c7b4b354
Model: NoteAir4C (English)
Finger: Onyx/NoteAir4C/NoteAir4C:11/2025-06-13_22-34_4.0.1-rel_0613_17903883e/3746:user/release-keys
Link: http://firmware-us.boox.com/1e8e256ad1613982cbd4440055132160/update.upx
Size: 138,608,668
MD5: 1e8e256ad1613982cbd4440055132160
Model: NoteAir4C (English)
Finger: Onyx/NoteAir4C/NoteAir4C:11/2025-07-26_19-00_4.1-rel_0726_509651412/4593:user/release-keys
Link: http://firmware-us.boox.com/3f4de14a058b8263e1bdaf47f351ca0c/update.upx
Size: 353,069,994
MD5: 3f4de14a058b8263e1bdaf47f351ca0c
Well, if I were me, my idea would be to make a custom recovery and install an update from there.
That's a BSR device (isn't it?) and I've never been able to draw on those.
Isn't it time someone gave me one for my birthday?
On the other had, pm uninstall doesn't really do anything to system pre-installed apps besides setting some flags in data.
A wiping of user data should get you back.