I’ve installed the second nozzle kit but encountered a problem when trying to change the firmware.
Tried searching here and found some similar issues but not a solution that worked for me.
Following the manual:
Arduino ide 1.0.6
Latest firmware for dual heads from vertex-site.
Prog jumper/stunt installed.
Press download, compiling and downloading.
But after a while I get an error message:
“done uploading” but also error:
“avrude: verification error, first mismatch at byte 0x0002
0x29a != 0xef
Avrude: verification error; content mismatch”
The printer has the version 1.4 for single head installed and works as it should.
I’m not very familiar with in-depth arduino so I hope some one here can help me, all help and tips will be highly appreciated!