I don't have any backups on my n900 as I do a full reflash if I mess up anything so sorry can't give you any files from backupmenu... But how did optfs got included with the problem? As I can see in the diff from the oct 12 version to the nov 1 version only bq module & dsp dsp codes were modified and yeah + some from kp-settings which I presumed caused your reboots.