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--- a5:bootloader [2018/02/05 03:57] – pinchies
+++ a5:bootloader [2018/02/05 04:30] – [Flashing bootloader using USB Programmer] pinchies
@@ Line 1: / Line 1: @@
-===== Flashing a new bootloader on the A5 =====
+====== Flashing a new bootloader on the A5/A3S ======
 In some circumstances, a firmware flash may fail half way, which will cause the motherboard to "lose" its bootloader. The bootloader is a part of the firmware that allows the motherboard to be upgraded over USB. Without the bootloader, the firmware must be flashed using the ICSP programming port.
@@ Line 6: / Line 6: @@
-=== Flashing bootloader using Arduino UNO or Arduino MEGA===
+===== Flashing bootloader using USB Programmer =====
+The simplest process.
+  - Connect programmer to computer
+  - Connect programmer to motherboard
+  - Open Arduino IDE
+  - Select the programmer you use in the Tools -> Programmer menu
+  - Choose "Burn Bootloader" in the tools menu
+  - Go back to normal life, flashing via USB cable direct to your 3D printer.
+===== Flashing bootloader using Arduino UNO or Arduino MEGA=====
+Don't have a USB programmer lying around? Feeling like you would like to buy an arduino for future projects anyway?
+Read on...
+**You can use an Arduino as a USB programmer fairly easily!**
 Please read [[https://www.arduino.cc/en/Tutorial/ArduinoISP|this article]] first for the main guide.
 We need to do three things:
@@ Line 25: / Line 41: @@
 Once you have flashed the bootloader, you can flash the firmware using your usb cable directly to the printer. Don't forget to follow all [[a5:firmware|the instructions]]!

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