Hi there,
I'm from Brazil, and I'm new in this forum. I'm sorry if broken any rules, but here in Brazil, the biggest communication company , called Oi , use a version of zyxel and we can't update the firmware and change a lot of settings , include public WiFi that they share without our permission . Zyxel doesn't provide another firmware to download, but I got this file from a YouTube channel. I'd like to know if is there someone to help us to be free building a OpenWRT version for this file ,or maybe someone that know a OpenWRT firmware available to our router by the firmware file ?
See the hardware's picture
https://drive.google.com/file/d/1f2t-776JJ_rW4qmpeynZCLU9rX9CX5Dr/view?usp=drivesdk
ivairosouza,
Sry but ... a rather (too) blurry picture.
If somebody could help you fine, but for me i need to be able to 'read' everything on main-board.
It seems it has a TTL serial-connector, first would be to read out whats on there.
Regards, DG.
Hello friend
I'm sorry cause I don't attempt that photo , I got a new one , I think it's better
https://drive.google.com/file/d/1vZGc3ubMvto3QTPxzf96LVTBl61--AQD/view?usp=drivesdk
https://drive.google.com/file/d/10zfBcQ33F8CO8o_6xkyazoFD_A3mpe7Q/view?usp=drivesdk
The original firmware
ivairosouza,
Indeed clearer picture, but i still can't read te main CPU information.
Looks like a MT76xx device, like ZyXEL Keenetic Extra II.
This device is not (yet) on the toh (Table Of Hardware).
In my picture, the upper circle does look like a TTL serial connector, on which it is possible to read out boot process and information. With the right USB to TTL-serial device.
When possible, type (or photo) the CPU info, second -lower- circle in my picture.
The 'original' firmware link you wrote, i would not trust! it's NOT related anyhow to the device fabric ZyXEL.
And ZyXEL website doesn't even know the device (type)?
Could it be a fake chinees copy? Then i doubt running any other firmware would do better as when bought.
According ZyXEL forum, you should check Firm 'Oi' for 'original' firmware.
https://homeforum.zyxel.com/discussion/comment/2237/#Comment_2237
Regards, DG.
This device isn't Chinese , it's a customized version to Oi telecom from Brazil, and Oi doesn't provides the firmware, they switch modem, and we remain slaves without being able to change the advanced settings and they sharing the wi-fi without authorization. thousands of people in Brazil are looking for a solution.
Friend
In this picture you can see cpu's information
MT7505N
ivairosouza,
Sorry, but 4 the time being i cant help you further out, due to the following findings:
1- This is a 'restricted' chip, for that Brazil company, i guess.
If there's no further information, i doubt anyone will put effort in this.
You need some more basic information of the current 'device' to be able to test/build other own firmware.
2 - Not just the CPU, but what and how much memory is used.
How the other hardware, like wifi, internal switches etc and their 'addresses' must be known, before being able to regenerate own OpenWrt firmware.
3 - The only device on wikidev i can find on MT7505(n) is the TP-LINK TD-W8901N v3. This device has only 8 MB of RAM, loo less to even try running openWrt, as stated in:
https://openwrt.org/supported_devices/432_warning
The MediaTek chip is indeed not made in China, but in Taiwan!
4 - I am completely NOT aware of (any) DSL functionality, i can't test it either.
5 - Changing advanced settings, like?
If your ISP does not want 'something' -like usage of port 80-, they just block it.
And you can't do anything about that 
That they open 1 radio wifi-channel for their own 'open-wifi', isn't so bad after all. Also you can use other(s) access-points, anywhere.
I just use my openWrt routers (and Wifi) after the router that comes from ISP.
If you (and thousands more) are not satisfied by the provided modem, protest! Or switch to other ISP.
Regards, DG.
P.S. And yes: Everybody is slave in 1 or other 'figure'.
Okay
Thank you do much for your help .We can't change to other ISP , because there is just one ISP in Northern of Brazil, Oi Telecom
See you
Ola @ivairosouza vc conseguiu alguma solução pra este roteador?
Eu queria na verdade mudar de firmware pra tirar essas restrições da oi e utilizar como repetidor ou ponto de acesso.
Hello @ivairosouza did you find a solution for this router?
I actually wanted to change the firmware to remove these restrictions from hi and use it as a repeater or access point.