I think I have a specific PW, not like the usual. First of all, I could not update to 5.3.0 only after I jailbreaked it (read more here:
https://www.mobileread.com/forums/sho...60#post2301060). I have about 850 books in my kindle (inherited in time from my K3), but the indexing tooked longer than from the K3.
Than this thing you mentioned, something is working in background, and takes processing power, memory and battery. I have a feeling that something consumes battery in the background too fast , even if I have my kindle in airplane mode. Is there something wrong with my specific Kindle, or am I geting paranoid?
regards
huzsolt