Ancient Crosstour CT9500 Action Camera Hardware/Firmware Mods

[michalv]

Hi all, I have a camera with the same board, named Lamax X10.1. I was able to get into the Linux console and extract the flash to the SD card.
My key question is, how do you guys flash the camera? Just plain overwrite the appfs.jffs2 via UART from the SD card onto the flash? How did you @helg get the telnet out of the USB?
My goal is to connect the camera to a wifi (instead of it being an access point), or enable full quality video streaming through the USB, just for context. Thanks!

 

[helg]

My key question is, how do you guys flash the camera? Just plain overwrite the appfs.jffs2 via UART from the SD card onto the flash?

Judging from the decompiled main_app binary, there is some undocumented wifi HTTP API endpoint to upload firmware update image, which will be unpacked and installed on the dashcam.

How did you @helg get the telnet out of the USB?

Started telnetd on the dashcam, removed the UVC gadget kernel module, inserted the usbnet module (ethernet CDC over USB), configured the IP addresses and used telnet. It should work over wifi too.