hint for esptool version

toniebox-reverse-engineering · Oct 2, 2023 · 6258124 · 6258124
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diff --git a/README.md b/README.md
@@ -48,7 +48,7 @@ You can use the [cc3200tool](https://github.com/toniebox-reverse-engineering/cc3
 cc3200tool -if cc32xx-flash.bin -d cc32xx read_all_files extract/
 ```
 #### ESP32
-You can extract the flash memory via the debug port of the box and the esptool. Keep your backup!
+You can extract the flash memory via the debug port of the box and the esptool. Keep your backup! Please use a recent version of esptool. (>v4.4)
 Please connect the jumper J100 (Boot) and reset the box to put it into the required mode. Connect your 3.3V UART to J103 (TxD, RxD, GND).
 If connected with the Boot jumper, the box just start in "DOWNLOAD (USB/UART0)" mode. (Check with a serial monitor). Beware, if the serial monitor is open it will block esptool.py from accessing the esp. If you get a "BROWNOUT_RST" check your power supply / battery. "SPI_FAST_FLASH_BOOT" indicates a boot without the J100 jumper.