I'm gonna try build OpenWrt for a modem isn't supported rn.
OpenWrt supported modems are few and not common in Egypt (where I live).
ISPs limit functionality of their modems with the firmware being ONT ( It has their logo and custom things and so).
The device is called ZTE ZXHN H108N V2.5
Model: ZXHN H108N V2.5
Serial Number: ZTERRT1G9J00632
Hardware Version; V1.1
Software Version: V2.5.4_EG1P6_TED
Boot Loader Version: V1.1.0
DSL Firmware Version: 4926d722
It also has
Unfortunately, the official firmware for this device isn't available online (ONT) but I found some firmware which maybe useful.
This is photo from inside.
On other thread the user @Sparks directed me to look for serial pins so to connect via it and extract the bootloader as a first step. I think these are the pins which is referred to.
So what is next?