@SF
I've got older versions on an unused HDD somewhere, just need to locate it. Probably i'll have very old 0827 versions for sure, but not so certain about 1091 MTK. I'll have a look and let you know. It's unlikely properly reformating the visible file system in region 48 will help as the problem is indeed likely residing in region 41 as you suspect. Certainly your plan to erase rgn41 and see if the time changes to the correct local time has merit. If it does then a restore of nonvol followed by a radical fw downgrade will either fix it or kill it if you wish to take that risk.