[pgerhard]

I bought a BB 8110, it came together with Desktop Software 4.3 which works fine.

however I tried on a different computer to install version 5.0 and 4.5 and both failed to recognised my device!

Is it possible that 8110 is only compatible with version 4.3 of the software? That would be a bit silly...

paul

[Dubdub]

It should be compatible with any version, but if it works with 4.3, then why change?

The only thing to try would be to do a battery pull on the BB and see it it works then. It might just be a BB error that the battery pull can clear up.

What OS is on the PC that you used? I know Vista 64 seems to cause problems and Windows 7 might also pose the same problem since it is so new.