Technicolor TC7210.CM – Stuck in CM (Bridge) Mode – Possible to Enable RG (Router) Mode or Flash Generic Firmware?

[artur]

Hi everyone,

I have a Technicolor TC7210.CM DOCSIS 3.0 gateway that is currently operating in CM (Bridge) mode.
I am trying to repurpose the device, but I cannot switch it back to full RG (Residential Gateway / Router) mode.
Current situation:

• No access to 192.168.0.1
• Only limited diagnostic access (192.168.100.1)
• Factory reset does not change the operating mode
• Web interface does not provide an option to switch from CM to RG
• Device seems firmware-locked
• Goal:
• Enable full router functionality (NAT, DHCP, Wi‑Fi, LAN routing)
• Switch from CM mode to RG mode
• Flash generic / stock firmware if possible
• Remove firmware restrictions

Technical questions:

1. Is CM/RG mode controlled purely by DOCSIS provisioning?
2. Is there any publicly available generic firmware for TC7210.CM?
3. Has anyone accessed this model via UART/serial console?
4. Is the bootloader signed/locked?
5. Can this device function as a standalone router without ISP provisioning?

I understand this is a DOCSIS 3.0 (16x4) cable gateway, but I’m exploring whether it can be converted into a normal router.

Any technical advice or experience with this model would be greatly appreciated.
Thanks.