ReadyDATA 516 bootup issues

I have the above titled unit (x2) both with issues ..

unit 1 power on ok however even when connected to a network and showing ethernet connection activity fails to load

have tried ;

Memory test: Pass 

Factory Default (there is no data issue as these are beings setup with test drives)

OS Reinstall

After 24hrs of both no progress was achieved. Wondering how long this process would actually take? I would definitely be of the opinion it being less than 24 hours?

These are units bought as part of a batch of warranty returns – just seems a waste to not be able to get these functioning again after all they are expensive units!

I suspect it is a firmware issue and the default factory image is corrupted hence the failure of the factory default or os reinstall

Is there a way to reload that firmware? Or even install the new firmware?

I have opened a unit and not an onboard battery (penny type likely a cr2032 or 2016) and a jumper?

As I say expensive bits of kit which should be recoverable instead of just ending life in the bin…

Any help appreciated…Thanks

edit: honestly guys - ye need to sort out the functionality of your board auto loads, labels very difficult to use...