Novice trying to use your tool

[cosegura]

I downloaded the files from github *FlashForge_Marlin-0.15.1. I tried to follow your instructions to install on 3D20. I am stuck on step 5 when you talk about swapping the Dremel bin file with the decrypted one. I unzipped the file and can see two folders but they are empty (flashforge_firmware_tool and Marlin). So I can't figure out how or what to decrypt at this point. I searched the discussions, but everyone on here seems to be a decade or two ahead of me. I am not a programmer, obviously.

I honestly don't even know if this will help. I had an error 103 code and thought I had a bad thermistor, swapped out the entire hotend but the code remains, so now I'm thinking it might be a coding error because the connectors and the wires have good connectivity. I'm afraid the motherboard might be toast so trying this as a last ditch effort to see if I can revive the printer for my kids robotics club.

[cosegura]

Please disregard. I figured out what everyone was talking about. For other novices like me:

1. unzip two files: both the color ui and the FlashForge_Marlin-0.15.1 file.
2. when you unzip the color ui, you only have to pick ONE of the .bin files (I picked dremel_2.0.9.5_01152023.bin because I read on another post that if you had no idea what the _la version was for, to not use it. Then I copied that file in the same folder where the current firmware was located (you can find it by searching for the .bin file listed in the dremel firmware update files). You do not have to encrypt or decrypt anything. Just go through the normal firmware update process as described on their website using the usb cable.

I realize that might be super confusing except for perhaps that one dummy that is at the exact same spot that I am. But I was so excited to see the new user interface on my old dremel, I wanted to share.

Unfortunately, now instead of heater error #103, now I'm getting E1 errror - so switching to this firmware didn't help me solve my actual problem. Now I'm busy learning about PID tuning - no clue what I'm doing, though. Good luck.