Hi, to keep it short
-deep end discharged my Kobo Libra after a trip

-voltmeter showed a dead battery
-replaced it with a new one (soldering) (can be charged via USB)
-device can't be hard reseted
-still shows my last ebook cover and is found via USB under WIN10 as "se blank 6sll"
by checking your forum I found out that it's bricked, is there the possibility to load the firmware back to the device via USB +script/software?
got this one (MARK 7 from your table): kobo-update-4.30.18838