Update sigmastar-unbrick.md

en/sigmastar-unbrick.md

@@ -3,9 +3,29 @@
 
 Sigmastar unbrick
 ---
+**Prerequisite**
+- git
+- make
+- i2c-tools
+---
+**Disabling ch341 core module loading**
 
+Add the line blacklist ch341 to the file /etc/modprobe.d/blacklist.conf. Update initramfs and reboot the system:
+```
+sudo update-initramfs -u
+reboot
+```
+---
+**Ch341-i2c driver download**
+```
+git clone https://github.com/frank-zago/ch341-i2c-spi-gpio
+make -C ch341-i2c-spi-gpio
+sudo insmod ch341-i2c-spi-gpio/ch341-core.ko
+sudo insmod ch341-i2c-spi-gpio/i2c-ch341.ko
+```
+---
 **Locate the Sigmastar UART output and connect it to the CH341A I2C:**
-- $\color{black}{\texttt{GND -> GND (PIN 1-4)}}$
+- $\color{grey}{\texttt{GND -> GND (PIN 1-4)}}$
 - $\color{deepskyblue}{\texttt{TX -> SDA I2C (PIN 5)}}$
 - $\color{orange}{\texttt{RX -> SCL I2C (PIN 6)}}$
 
@@ -17,7 +37,15 @@ Sigmastar unbrick
 
 **Download snander-mstar:**
 - https://github.com/viktorxda/snander-mstar/releases
-
+```
+git clone https://github.com/viktorxda/snander-mstar
+```
+In the /snander-mstar/src/spi_controller.h file, specify your i2c device in the #define I2C_CONNECTION directive and compile the sources
+:
+```
+make -C snander-mstar
+mv snander-mstar/snander .
+```
 ---
 
 **Check the device flash with snander:**