Firmware Update - error, can't get it working

[aWsomeABE]

Hi, I can't seem to get my E3D to get a firmware update to work, but I keep getting the following error:
avrdude: stk500_getsync(): not in sync: resp=0x89

Any idea what this is? What could be causing it?

[MyManJan]

Have you tried starting from scratch? That's what I'd suggest. Can't think of any other solution.
Jan

[Mysli]

Which Solidoodle do you have? if you have SD2/3 you can use this guide at least.
Also dont forget to edit the max allowed temp as E3D will run a much higher temp with the 12W heater, thus allowing for way faster extrusion speeds (mind the fumes though)

[aWsomeABE]

I have SD 3. Which guide are you referring to Mysli?

[Razorette3D]

I'm having a similar issue. Mysli, could you please explain what you mean by "this guide"?