The model number in CPs 0x55 and 0x56 is MK5061GSYN, so the ROM does not appear to be native.
Code:
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00000000 4D 4E 20 20 20 20 20 20 20 20 20 20 20 20 20 20 MN
00000010 20 20 20 20 20 58 33 4B 4D 54 58 4B 4F 54 54 4F X3KMTXKOTTO
00000020 53 48 49 42 41 20 4D 4B 35 30 36 31 47 53 59 4E SHIBA MK5061GSYN
00000030 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
00000040 20 20 20 20 20 20 00 00 00 00 00 00 00 00 00 00 ..........
00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000080 00 00 00 00 FF 3F 10 3F 30 60 38 3A 00 00 00 00 ....ÿ?.?0`8:....
00000090 05 01 00 01 00 00 00 00 00 00 00 00 00 00 00 00 ................
000000A0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
000000B0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 C7 ...............Ç
This is the SN CP 0x9A:
Code:
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00000000 53 4E F9 4D 32 59 54 4F 55 57 34 30 30 30 30 31 SNùM2YTOUW400001
00000010 33 31 30 31 39 31 36 30 39 54 4E 45 32 33 32 45 310191609TNE232E
00000020 4C 31 32 35 46 4E 37 30 30 30 30 4D 48 30 30 30 L125FN70000MH000
00000030 44 33 20 00 00 30 30 30 30 30 30 00 00 00 00 E4 D3 ..000000....ä