After the last bytes of 0x0C region (FF FF 5A A5 FF FF FF FF, no checksum byte, but no one cares), the next region header follows immediately. Those bytes indicate that the next region is 0x0E.
0A 5B 2F 00 = 0x002F5B0A = <0x0E region size> + 0x0A
00 5B 2F 00 = 0x002F5B00 = <0x0E region size>