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Vonage/Grandstream HT802 Factory Unlock

WARNING: This is an advanced topic and will void your warranty! Neither SDF, the authors, contributors or sources linked within this file will be liable for your own actions. Proceed with caution!
WARNING 2: This page is provided for information only. Under no circumstances should these instructions be used for any illegal purpose or in violation of any contract or user agreement.

Vonage branded models of the Grandstream HT802 come loaded with a factory-locked firmware which does not allow for user configuration. These models will not permit admin login with the standard Grandstream default login of admin/admin. Removing the Vonage settings will require the following tools and abilities:

Step one: Disassembly and mainboard access

Step two: Connect to the serial terminal

Step three: Apply unlock and flash firmware

When your HT802 reboots, you will be able to access the web interface using the device's ip address. The default login admin/admin will allow you to configure the device without factory restrictions.

These instructions have been adapted from this post on dslreports.com

$Id: ht802_factory_unlock.html,v 1.1 2022/01/29 22:16:25 shriver Exp $

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