Attempting to access shell Airtel F670L using UART

[mostwanted002]

If anybody can provide me the firmware/update file, I might able to extract passwords and other configuration files from it.

 

[ritishk1212]

@mostwanted002 I'll provide you firmware so you can find the user/pass

 

[asrocks5]

@thisiscorgi , I'm from Ludhiana too, trying to extract this netplus ONT's admin password. Did you have any luck?

 

[harman22]

mostwanted002 i can provide you firmware

 

[SR7007]

@JB701 can you help me out in enabeling telnet access on GX Titanium T21 Pro, UART is locked, upgrade.asp worked only in 2022 models not in 23-24 modesl, there is option of ACl which is disabled, through inspect i enabled it but no ports were open, scanned using nmap, do you have any idea about how to proceed further?

 

[Vinitha]

I tried the same. But I also stuck with the login prompt and tried multiple combinations and didn't work. I am also trying to reuse the router. @mostwanted002 Were you able to identify the user name and password?

 

[iamkaran]

@thisiscorgi I am from ludhiana too and i use netplus, I was trying to use the UART pins of the ZTE F670L but it just output ASCII Garbage even after trying all baudrates, parity. I think the router uses its own propriety form of communication which is not UART. How did you manage to communicate with it

i have this:
ZTE ZXHN F670L

Pins:

Square pad: GND
2nd pin from GND: tx (gibberish)
3rd pin from GND: 0.00v
4th pin from GND: VCC (3.3v)
5th pin from GND: tx