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Updated How to Unlock MCU flash (markdown)

EmanuelFeru
2020-02-07 18:17:13 +01:00
parent c758aee7fe
commit 99945f94eb
1 changed files with 2 additions and 2 deletions
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How-to-Unlock-MCU-flash.md

@@ -30,11 +30,11 @@ This wiki page explains how to unlock the flash of an STM32 or a GD32 to allow r
* Step 1: Install the [ST-Flash Utility](https://github.com/texane/stlink)
* Step 2: Install [OpenOCD](https://zoomadmin.com/HowToInstall/UbuntuPackage/openocd)
* Step 2: Connect the ST-Link programmer to the MCU programming pins GND, SWDIO, SWCLK. Connect the 3V3 pin only if your MCU is not powered externally.
* Step 3a: Open a terminal and send the following OpenOCD command:
* Step 3: Open a terminal and send the following OpenOCD command:
```
openocd -f interface/stlink-v2.cfg -f target/stm32f1x.cfg -c init -c "reset halt" -c "stm32f1x unlock 0"
```
* Step 3b: If that does not work. Try:
* Step 4: If that does not work. Try:
```
openocd -f interface/stlink-v2.cfg -f target/stm32f1x.cfg -c init -c "reset halt" -c "mww 0x40022004 0x45670123" -c "mww 0x40022004 0xCDEF89AB" -c "mww 0x40022008 0x45670123" -c "mww 0x40022008 0xCDEF89AB" -c "mww 0x40022010 0x220" -c "mww 0x40022010 0x260" -c "sleep 100" -c "mww 0x40022010 0x230" -c "mwh 0x1ffff800 0x5AA5" -c "sleep 1000" -c "mww 0x40022010 0x2220" -c "sleep 100" -c "mdw 0x40022010" -c "mdw 0x4002201c" -c "mdw 0x1ffff800" -c targets -c "halt" -c "stm32f1x unlock 0"
```