$ binwalk mjsxj10cm_original.bin DECIMAL HEXADECIMAL DESCRIPTION 0 0x0 uImage header (ARM Linux) 0x40 0x40 LZMA compressed data 0x400000 0x400000 Squashfs filesystem (little endian)
# Download OpenIPC for V39 wget https://github.com/OpenIPC/firmware/releases/download/latest/openipc.v39-*-nor-flash.bin flashrom -p ch341a_spi -w openipc.v39.bin Then configure RTSP, MQTT, etc. via web interface. | Problem | Solution | |---------|----------| | Bricked camera (no boot) | Re-flash via SPI programmer + original backup | | RTSP not working | Check if rtsp_server binary exists; try strace to see missing libs | | WiFi not connecting | Use iwconfig manually; check antenna connection | | UART no output | Swap TX/RX; check baud rate (115200 or 57600) | 10. Conclusion The Mjsxj10cm firmware is modifiable despite lacking official support. By dumping, extracting, and repacking the SquashFS root, one can remove cloud dependencies, enable RTSP/telnet, and secure the device. For long-term use, OpenIPC provides a cleaner, maintainable alternative. Mjsxj10cm Firmware
# Check if rtsp_server exists ls /usr/bin/rtsp_server #!/bin/sh /usr/bin/rtsp_server -p 554 -u admin -P [your_password] & $ binwalk mjsxj10cm_original
[GND] [TX] [RX] [3.3V] (TX from camera → RX of USB-UART) Method 1: Direct Flash Dump Use a CH341A programmer or similar: # Check if rtsp_server exists ls /usr/bin/rtsp_server #
Alternatively, inject via LD_PRELOAD or modify the main ipcam binary. The firmware may have telnetd but disabled. Enable:
tftp 0x80000000 modified_firmware.bin sf erase 0x0 +$filesize sf write 0x80000000 0x0 $filesize | Original Issue | Fix | |----------------|-----| | Hardcoded admin:admin | Change password, disable default account | | Open UART | Remove UART pads or disable console in /etc/inittab | | Cloud backdoor | Block tuvalabs.com , p2p.tuvalabs.com via /etc/hosts or firewall | | Unencrypted WiFi | Use iwpriv to set WPA2 key in startup script | | Telnet exposed | Replace with Dropbear SSH |