llllllmb
New Member
- Joined
- Dec 11, 2018
- Messages
- 8
- Reaction score
- 7
- Country
- Germany
- Dash Cam
- Blueskysea B1W, SJCAM M10
I poked around in the B1W firmware with Ghidra and found references to various video modes and things which are not available via the app (CBR, VBR, quantizer; bitrate...). However I have no idea how to modify these settings. From my understanding they are read from a certain block of memory within the ROM file(?), however I'm unable to locate / extract / identify it with "binwalk", "file" and other tools.
Firmware downloads are provided with a 512 byte default_cfg.bin config file that set some defaults, video settings do not seem to be located in there from what I found (I have little knowledge about reverse engineering and fw hacking).
Has anyone does any mods to the B1W firmware yet? Is there a nice way to unpack it (instead of analyzing the whole 1.6MB file in Ghidra as a whole)?
The camera uses theNovatek Grain Media GM8135S CPU, I found some stuff for other cameras, references to certain files in the fw (factory.txt, yeecam_test, focusin.bin) and mods on a Mi camera but they seem to differ a lot between cameras.
Firmware downloads are provided with a 512 byte default_cfg.bin config file that set some defaults, video settings do not seem to be located in there from what I found (I have little knowledge about reverse engineering and fw hacking).
Has anyone does any mods to the B1W firmware yet? Is there a nice way to unpack it (instead of analyzing the whole 1.6MB file in Ghidra as a whole)?
The camera uses the
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