Update Compiling_STM32.md

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@ -88,14 +88,10 @@ The latest Jumper 4-in-1 modules come with a USB port but it's in fact a built i
### Select an Upload Method ### Select an Upload Method
There are three methods to upload firmware to an STM32 module: There are three methods to upload firmware to an STM32 module:
* **Flash from TX** - highly recommended, uses maintenance mode in radios running ersky9x or OpenTX to upload the firmware
* **Upload via USB** - uses the USB port on the module * **Upload via USB** - uses the USB port on the module
* **Flash from TX** - uses the bootloader mode of radios running ersky9x or OpenTX to upload the firmware. The radio needs to run the latest bootloader with the Multi Flash app.
* **Upload via Serial inc. Bootloader (FTDI)** - uses the serial interface on the module via a USB-to-TTL adapter * **Upload via Serial inc. Bootloader (FTDI)** - uses the serial interface on the module via a USB-to-TTL adapter
**Note:** 'Flash from TX' is available with radios supporting ersky9x or OpenTX and running the latest bootloader with the Multi Flash app.
**Flash from TX** is highly recommended if your transmitter supports it, **Upload via USB** is recommended for all others. **Upload via Serial inc. Bootloader** can be used if your module does not have a USB port and your transmitter does not run ersky9x or OpenTX.
1. Under **Tools -> Upload Method** select an upload method 1. Under **Tools -> Upload Method** select an upload method
The rest of this process will vary depending on the upload method you selected. The rest of this process will vary depending on the upload method you selected.
@ -172,7 +168,7 @@ Assuming the process is successful:
## Flash from TX ## Flash from TX
1. Click **Sketch -> Export compiled Binary**, or press **Ctrl+Alt+S** 1. Click **Sketch -> Export compiled Binary**, or press **Ctrl+Alt+S**
1. Locate the file named **multifw.bin** in the **Multiprotocol** folder 1. Locate the file named **multi-stm-x.x.x.x.bin** in the **Multiprotocol source folder** folder (x.x.x.x is the multi version)
1. Follow the instructions [here](/docs/Flash_from_Tx.md) to upload the firmware using your radio 1. Follow the instructions [here](/docs/Flash_from_Tx.md) to upload the firmware using your radio
## Upload via USB ## Upload via USB