@ michaaa62: The 'navifirm' software itself is well used, and I agree fully re being very wary of the sources of files.

@ Wikiwide: I think my last update was OTA. I'd be happy to flash with the latest PR1.2. from Nokia's site and then await for any subsequent OTA update to 1.3 - But, can you flash to an earlier version without problem ? I can't see any reason why not, but I've read that this can give problems

@ Guyver: Thanks I now have the image file for the version currently on phone:
RX-51_2009SE_20.2010.36-2.203.1_PR_COMBINED_203_ARM.bin


There were 3 other small files:
RX51_0593611_20.2010.36.2_006.dcp
RX51_0593611_20.2010.36.2_006.vpl
RX51_0593611_20.2010.36.2_006.signature.bin

I'd be keen to confirm the authenticity of the image file and believe these file may do just that, but I don't know how

Oh ! currently my phone is failing to boot at all but I can get it to connect in recovery/flash mode. I now just need to get a fully charged battery before I flash.

--
HammY