Can you show us a photo of the component side of the PCB? I need to see the markings on the ICs in order to compare their date codes against the label.
There is a date code in the ROM, but I don't know if it reflects the actual manufacture date.
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
0007F400 50 5F 50 41 53 53 20 20 20 20 20 63 50 46 30 30 P_PASS cPF00
0007F410 30 32 35 54 53 30 32 36 33 41 4D 47 74 34 32 34 025TS0263AMGt424
0007F420 32 47 46 35 20 38 31 34 31 31 37 34 30 39 45 31 2GF5 814117409E1
0007F430 33 31 41 20 20 42 2D 54 42 30 32 2D 30 30 30 33 31A B-TB02-0003
0007F440 20 20 20 20 20 33 4E 39 36 36 56 41 46 20 31 34 3N966VAF 14
0007F450 2F 30 36 2F 32 30 20 31 37 3A 30 36 3A 34 31 20 /06/20 17:06:41
0007F460 30 30 34 36 00 00 00 00 00 00 00 00 00 00 00 00 0046............
0007F470 00 00 00 00 00 C1 40 91 58 5A 4C 00 00 00 00 00 .....Á@‘XZL.....
0007F480 20 20 20 20 35 56 00 00 20 20 20 31 32 56 00 00 5V.. 12V..
0007F490 20 20 31 2E 38 56 00 00 20 30 2E 39 34 56 00 00 1.8V.. 0.94V..
0007F4A0 00 00 00 00 FF FF 00 00 63 00 00 00 00 00 00 00 ....ÿÿ..c.......
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
0007F800 50 41 53 53 50 46 30 30 30 32 35 54 53 30 32 36 PASSPF00025TS026
0007F810 33 41 4D 47 74 34 32 34 32 47 46 35 48 36 67 30 3AMGt4242GF5H6g0
0007F820 6C 33 4B 6D 31 4E 6D 30 55 38 30 46 56 30 47 39 l3Km1Nm0U80FV0G9
0007F830 30 70 48 30 31 63 30 43 33 61 30 30 35 30 37 77 0pH01c0C3a00507w
0007F840 20 20 20 20 20 20 20 20 00 00 00 00 00 00 00 00 ........
0007F850 00 00 00 00 00 00 00 00 00 00 00 00 00 00 52 40 ..............R@
0007F860 00 00 00 00 00 40 53 40 00 00 00 00 00 00 4C 40 .....@S@......L@
0007F870 00 00 00 00 00 00 26 40 00 00 00 00 00 00 00 00 ......&@........
0007F880 05 00 00 00 07 00 00 00 54 65 73 74 20 65 6C 61 ........Test ela
0007F890 70 73 65 64 20 74 69 6D 65 3A 20 20 34 36 2E 36 psed time: 46.6
0007F8A0 33 30 73 65 63 00 00 75 6E 20 32 30 20 31 37 3A 30sec..un 20 17:
0007F8B0 30 32 3A 35 32 20 32 30 31 34 0A 0A 00 00 00 00 02:52 2014......
0007F8C0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0007F8D0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0007F8E0 00 00 00 00 04 00 00 00 50 5F 50 41 53 53 20 20 ........P_PASS
0007F8F0 20 20 20 63 50 46 30 30 30 32 35 54 53 30 32 36 cPF00025TS026