MicroKorg XL+ Firmware Update How To

[WTech]

Does anyone know if I can apply a firmware upgrade to a MicroKorg XL+? I have got a unit which fails to start up with an error message "TxSmPL: CkSumErr".
I can run the diagnostics and it fails Internal Test 3 - Flash ROM Check - all other tests run successfully.

I think I may be able to fix that issue with a new Flash install.

I also startup up the XL+ via Write + Exit/Shift into USB-MIDI mode.
Installed KORG MIDI driver into the laptop and attached USB cable and the driver can see the MicroKorg XL+.

Now here comes the problem; I can't seem to find a Korg System Updater for the XL+.

Contacted Roland support and they sent me the V1.00 and V1.01 system files in VSB format - but how would I apply them?

Any help much appreciated ...