I agree with Don's post. I downoload both files the 1.4 and the 1.8 cpu Canadian file for my PSR-500 C version.When you power on the scanner while holding down the PGM or PROG key, does the display show "uP BootVer:CF1.x"? If not, you don't have a "Canadian" PSR-500/600.
Did you download the correct ZIP file from the GRE America site? For a Canadian PSR-500/600 (indicated by the 'C' in the Boot version above), you should be downloading from the "PSR-500C/600C CPU Firmware 1.8" link.
Are you running the "CPUUpdater_PSR-500C-600C_U1.8.exe" file from the downloaded ZIP?
Most importantly, are you following the instructions within the EXE above? Note that the update procedures for the DSP and CPU are different.
If there's no 'C' in the boot version display, you don't have a "Canadian" PSR-500/600 - you have a US version.There is no C so should I use other update?
All you need to do is switch to Manual mode, Then press FUNC-F3. Scroll down to the item 3 from the top (BandPlan) . Press the left or Right arrow button to switch it to Canada (it will alternate between USA and Canada).I have a new PSR-500 (US ver). I'm showing boot F1.1 and applic F1.6. I want to upgrade firmware DSP 1.4 and CPU 1.8. I understand that there is a step change req'd for Canada. Can't locate a forum addressing this. Would appreciate any guidance in making the correction. Thanks,