How to correct a wrong firmware update

#1

I think I updated the wrong firmware to my GDS3710 device and now i cannot access it.

Any options other than doing a hard factory reset?

#2

https://documentation.grandstream.com/knowledge-base/gds3710-user-manual/#hard-factory-reset

#3

If still failed, please contact HELPDESK of Grandstream for repair. If under warranty, you need to pay one-way shipping. If out of warranty already, then two-way shipping required, like sending together the shipping back label (or PDF file) with the device. The repair itself is free.

Thank you for using Grandstream Access Control Products.