CFA634 Field Upgrade Kit - Beta

We recommend disconnecting any non-critical (for example, RESET) pins before entering bootloader mode.

To put the display into bootloader mode and upload firmware:
  1) Open the utility (fw_send.exe)

  2) In "Step 1 - Select the Firmware Image"
	 Click the "Select..." button and choose "cfa10061_cfa634_fw4v4_20260121.blf"

  3) In "Step 2 - Serial/USB Port Selection" 
     Select the connected Crystalfontz CFA634.

  4) In "Step 3 - Enter Bootloader Mode"
     Select "Reset Module into Bootloader Mode".
     After a moment, the module will reset into bootloader mode.
     Wait for the module to say "Waiting for data..." on line 3.

  5) In "Step 2 - Serial/USB Port Selection" 
     select Crystalfontz CFA634-USB Bootloader.

  6) In "Step 4 - Update Firmware"
     Click the "Update Firmware" button.

  7) When the module is done it will show the splash screen. You are now using the latest version of the CFA634.

Please reach out to support@crystalfontz.com for help or with any concerns.