wiki/en/sigmastar-unbrick.md

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Sigmastar unbrick

Locate the Sigmastar UART output and connect it to the CH341A I2C:

• \color{black}{\texttt{GND -> GND (PIN 1-4)}}
• \color{deepskyblue}{\texttt{TX -> SDA I2C (PIN 5)}}
• \color{orange}{\texttt{RX -> SCL I2C (PIN 6)}}

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Download snander-mstar:

• https://github.com/viktorxda/snander-mstar/releases

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Check the device flash with snander:

• Power cycling might help if the device can not be detected.

snander -i -q

Erase the boot partition:

snander -l 0x200000 -e

Write the new uboot file:

snander -w u-boot-ssc338q-nand.bin

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I2C devices:

• 0x49 -> MStar ISP
• 0x59 -> MStar Debug