Firmware Verification Failed

I am using cnPilot Indoor E400. Recently the Access Point is agkinf to upgrade the software. I downloaded the latest firmware form the website, the firmware version is E400_E50X-3.8-r3. But when I try to upgrade it is saying ' Firmware Verification Failed'. I am not able to use without the upgrade. Please kindly help me sort out the issue.

Thank you.



May I know the current firmware version on your E400 Access Point. Are you tryong to push firmware directly on to the AP or from cnMaestro. Also can you try re-downloading from following link (.img) file

Best Regrads,