Hi, I am using the AstLinux Linux/Asterisk distribution together with FOP2.
The distribution is firmware based. When I update AstLinux and reboot, FOP2 is then unregistered most of the time (after registering again it usually works then).
This is very annoying for my/your paying customers (and for me as well).
This problem didn't happen with v.2.28. I remember a similar FOP2 support case of one of my customers (MGOL-027050 from March 2016). It had something to do with EXT2/3 partitions.
On AstLinux the first partition is always a FAT16 partition (with the bootloader and system image), but the 2nd (and optional 3rd) partition(s) are always EXT2 formatted. The hard disk itself does not change after installation. Here it is explained:
Update: FOP2 2.31.01 is also sometimes unregistered after a simple reboot!