R510/R610 APsthat won't take Unleashed Firmware

[cory_andrews]

Anyone ever encounter R510 and/or R610 APs that won't take the Unleashed firmware upgrade?  We occasionally have units that, after factory reset, simply won't take a local Unleashed firmware upgrade.  They produce a disconnect error in browser.  Units function fine on their native Zoneflex image with a controller.  

Wondering if perhaps there is a recommended upgrade "path" to Unleashed, depending on the Zoneflex image you are starting from....or perhaps they are just an older hardware Rev that is incompatible with Unleashed firmware?

Thanks in advance!

Cory

[eizens_putnins]

Try to upgrade from CLI, it works more reliably than browser upgrade.

[smaha]

Did you try to upgrade to a standalone code first before upgrading with an unleashed firmware?