Quote Originally Posted by Neil View Post
Open the 465 fw with [Only registered and activated users can see links. ] and save the fw_all.bin somewhere convenient. Then open the 265W fw and load the 465 fw_all.bin in place of the existing. Check the HWID override panel and set it to 0827 then save the combined firmware as 082701000420.rgn.
I take it you mean the 250W fw. The MD5 checksum of the .rgn file created myself is identical to the one you provided. Therefore safe to say the .rgn file is OK. I therefore continued with the next instruction:

Quote Originally Posted by Neil View Post
If it still wont boot after flashing the re-made fw, open the hybrid rgn again with RGN_Tool and add the 465 logo into the third field. Save again as 082701000420.rgn and try again.
Don't forget to do the hard reset before and after each flashing.
Flashing the new .rgn file (including the 465 logo) failed. Just as the progress bar wants to start at 0%, the GPS unit terminates preboot mode. Result is a failed flash (not a bricked unit though). Tried few times, same result:

cxxd

Maybe worth giving the other method a try?