3.1.1 cannot write to sqlitedb created by 2.20
I have a sqlitedb created on >=2.20 some time ago. however after i've updated to 3.1.1 and try to download to that db, it keeps saying problem with sd card or network, and i don't want to download the whole file once again. it has no problem of reading, just cannot download extra or overwrite tiles.
what can i do?