I compare region 139 from nuvi 37xx to 34xx and original nuvi 3490

37xx to 34xx region 139

0 1 2 3 4 5 6 7 8 9 a b c d e f
00000000h: 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00; . . . . . . . . . . . . . . .
00000010h: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00; . . . . . . . . . . . . . . . .
00000020h: 00 00 30 00 31 00 00 00 00 00 00 00 00 00 00 00; . . 0 . 1 . . . . . . . . . . .

3490 (Original) region 139

0 1 2 3 4 5 6 7 8 9 a b c d e f
00000000h: 20 00 00 00 00 00 00 00 00 00 30 00 36 00 2D 00; . . . . . . . 0 . 0 . 6 . - .
00000010h: 44 00 32 00 36 00 31 00 37 00 2D 00 30 00 30 00; D . 2 . 6 . 1 . 7 . - . 0 . 0 .
00000020h: 00 00 30 00 41 00 00 00 00 00 00 00 00 00 00 00; . . 0 . A . . . . . . . . . . .