Sorry, no. Modifying Garmin's software for such a purpose as using illegal (unlocked) maps is against this forum's rules now. I'll help you find the reason that the V4.10 kit didn't flash for you however and it's not a problem that you have later version BIN files in the kit. The very latest version is actually V4.40 anyway.

Check the following:
  • Ensure you indeed do have a US/EU firmware DA51. The HWID of your device should be 2590: [Only registered and activated users can see links. ]. There is a regional variation for APAC with HWID 3109.
  • Examine the SD kit to confirm that the HWID folder is named the same as the device's, i.e. 2590. If it's not the same DO NOT alter the kit or further attempt to use it in any way with your device.
  • If it is the same, check that a file named last.id_bin is not present in the folder. If it's present it means the kit's been previously used, so remove it because it stops the kit being used again.
  • Look for a file there named update.log. If present it contains the flash history. If there, open it in Notepad to copy and post the text content here.