mimxrt/boards: Update deploy instructions.

Make the final step of the deploy more detailed.

Signed-off-by: robert-hh <[email protected]>

Author: robert-hh

ports/mimxrt/boards/ADAFRUIT_METRO_M7/deploy_metro_m7.md

@@ -8,4 +8,8 @@ here: https://learn.adafruit.com/adafruit-metro-m7-microsd/installing-the-bootlo
 
 Once the bootloader is installed and started, you can install MicroPython
 by copying the .uf2 version of the firmware file to the bootloader
-drive. When the firmware is installed, the drive will disappear.
+drive. A LED on the board will start flickering, indicating that the
+upload is ongoing. Once the upload is complete, the drive icon will
+disappear. Wait until the LED stops flickering. In rare cases there
+may be an error message coming up, especially when there are only few
+or no changes in the firmware file. Then just repeat the upload.

ports/mimxrt/boards/MAKERDIARY_RT1011_NANO_KIT/deploy_makerdiary.md

@@ -31,4 +31,9 @@ sudo ./sdphost -u 0x1fc9,0x0145 -- jump-address 0x20207000
 ```
 Wait until a drive icon appears on the computer (or mount it explicitly).
 At this point the bootloader is installed. You can now copy the
-MicroPython .uf2 file to the board.
+MicroPython .uf2 file to the board to start the firmware upload.
+A LED on the board will start flickering, indicating that the
+upload is ongoing. Once the upload is complete, the drive icon will
+disappear. Wait until the LED stops flickering. In rare cases there
+may be an error message coming up, especially when there are only few
+or no changes in the firmware file. Then just repeat the upload.

ports/mimxrt/boards/OLIMEX_RT1010/deploy_olimex.md

@@ -33,10 +33,16 @@ and you will not need it for Windows.
 
 4. Once the upload of the bootloader is finished, push Reset twice.
 
-The bootloader should start and show a drive icon. Copy the .uf2 version of MicroPython
-to this drive to install or update MicroPython.
+The bootloader should start and show a drive icon.
 
-Once the UF2 bootloader is installed, only step 4 is required to deploy MicroPython. If
+5. Copy the .uf2 version of MicroPython to this drive to install or update MicroPython.
+
+A LED on the board will start flickering, indicating that the upload is ongoing. Once the upload
+is complete, the drive icon will disappear. Wait until the LED stops flickering. In rare cases there
+may be an error message coming up, especially when there are only few or no changes in
+the firmware file. Then just repeat the copy.
+
+Once the UF2 bootloader is installed, only steps 4 and 5 are required to deploy MicroPython. If
 MicroPython is already installed, the bootloader can as well be invoked by calling
 `machine.bootloader()`.
 

ports/mimxrt/boards/deploy_mimxrt.md

@@ -41,5 +41,8 @@ installed.
 
 If there is no valid Firmware on the device, the bootloader will start automatically.
 Once it's started, a drive ICON will appear. The MicroPython firmware file with .uf2
-extension must then be copied to that drive. When the file is copied and MicroPython
-is installed, the drive disappears and MicroPython starts.
+extension must then be copied to that drive. A LED on the board may start flickering,
+indicating that the upload is ongoing. Once the upload is complete, the drive icon
+will disappear. Wait until the LED stops flickering. In rare cases there
+may be an error message coming up, especially when there are only few or
+no changes in the firmware file. Then just repeat the copy.