We've had similar kinds of devices in our labs (for calibration) not these particular units. The first thing id try if the filesystem is readable in windows is to put the cf card in a reader on a Windows pc, back it up and run chkdsk against it.

There are two phases to the upgrade: First the VALAPP software is upgraded, and then the PIC firmware is upgraded. After these two phases, the upgrade should be verified. UPDATE PHASE 1: INSTALLING VALAPP PLUG THE AC ADAPTER INTO THE ValidatorPRO. VERIFY a battery is installed in the unit. Descargar coronacion jose donoso pdf de. PLUG the loaded USB stick into the ValidatorPRO.

Check that it returns OK, repair any errors that come up.

If the device still won't boot make sure you made a complete backup, reformat the card (make sure you keep the same file system) and reinstall the programs by copying them from the backup.

Failing that, get a new cf card of same capacity and format it, copy the backed up files onto it and try that.

If that doesn't work you can try and do a firmware reset back to factory defaults but I can't advise on that as I don't have experience of this unit.

Failing that as as last resort it's likely a hardware fault. Is the unit under warranty?