I think that you should use FCC version. Binary comparison:
OFFSET v1/FCC/bdwlan.bin v1/EU/bdwlan.bin
--------------------------------------------------------------------------------
0x00000000 01 00 04 04 00 00 00 00 00 80 F0 62 18 04 C4 41 |...........b...A| \ 01 00 04 04 00 00 00 00 00 80 E4 62 18 04 C4 41 |...........b...A|
*
0x00000030 34 5B 00 00 48 83 00 00 00 00 13 3B 00 00 01 00 |4[..H......;....| / 34 5B 00 00 3A 83 00 00 00 00 13 3B 00 00 01 00 |4[..:......;....|
*
0x00000230 00 01 01 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| \ 00 01 01 00 14 00 00 00 00 00 00 00 00 00 00 00 |................|
*
0x00000450 02 00 00 00 00 00 00 00 48 83 00 00 00 A1 00 00 |........H.......| / 02 00 00 00 00 00 00 00 3A 83 00 00 00 A1 00 00 |........:.......|
*
0x00000500 48 83 00 00 00 A1 00 00 00 00 00 00 00 00 00 00 |H...............| \ 3A 83 00 00 00 A1 00 00 00 00 00 00 00 00 00 00 |:...............|
*
0x000005A0 02 00 00 00 00 00 00 00 48 83 00 00 00 A1 00 00 |........H.......| / 02 00 00 00 00 00 00 00 3A 83 00 00 00 A1 00 00 |........:.......|
*
OFFSET v2/FCC/bdwlan.bin v2/EU/bdwlan.bin
--------------------------------------------------------------------------------
0x00000000 01 00 04 04 00 00 00 00 00 80 91 17 18 04 00 03 |................| \ 01 00 04 04 00 00 00 00 00 80 E3 17 18 04 00 03 |................|
*
0x00000030 34 5B 00 00 48 83 00 00 00 00 13 49 00 00 00 00 |4[..H......I....| / 34 5B 00 00 3A 83 00 00 00 00 13 49 00 00 00 00 |4[..:......I....|
*
Linksys has locked some channels on every radio. Even if we use a BDF that allows the use of other channels, it does not mean that these channels will work correctly.