Flashing .ino / Firmware' MD5 error

[alexandrglm]

Hi,

I've been using this board for a month now, and recently started experiencing Error Code 2 MD5 mismatch errors when flashing firmware/programs or trying to erase_flash. This seems to be a common problem with similar boards, possibly due to their origin and limited documentation.

I've seen that some people have solved this issue by pulling up D5/D6 to GND with a 3.3k Ohm resistor, or by making other connections between GPIOs and the CH-PC pin. However, these solutions seem to be specific to different board models, not working on this.

What is the exact procedure you followed when flashing a new firmware, erasing the flash, or flashing any program? Please include details about pinouts, reset and flash buttons, and any other relevant information.

I'm hoping you might be able to provide some advice on how to resolve this issue with this.

Thanks in advance.

Alexandr.

[peff74]

Hi,
I am glad that my program works for you.
To be able to help you I need more information
Which program do you use for flashing and which version?
What build rate are you transferring at?
Are you only using my script or have you extended it?

Normally, if you use the current Arduino version with an upload of 115200 it always works and you don't need reset and flash buttons.

[alexandrglm]

@peff74 Thanks!
These generic settings for this board will help me a lot.

About your program, I'm walking my first steps in general.
I'll notice you about both issues when restored this boards.

If you want to close the issue, please, feel free to do it =)