old Marlin-Firmware - How to update?

Hi there,

I have an old Marlin Firmware (from 2016) running in my DIY-Printer.

I would like to update it, to use new functionality. But I don't have the old files on my computer. And I'm a little bit scared about installing a completely new firmware on it, because I'm worried about setting all the parameters (board-type, PID, limit switches and so on).

So - what is the easiest way to update the firmware?
Is there any possibility to read out the parameters?

Cheers and thanks!

M503 will display some settings but the rest you will have to work out

But looking at your previous posts you added unsupported i2c io expander, that will be fun to port

Also it is recommended up upgrade your motherboard to a 32 bit controllers

Edited 3 time(s). Last edit at 09/28/2025 08:09AM by Dust.

Oh no, atm I have no i2c-expander running.

How do you mean this?

Quote
Dust
Also it is recommended up upgrade your motherboard to a 32 bit controllers

Isn't it possible to upgrade the marlin firmware with my gt2560-board?

yes*

Most new fun features require a 32bit controller, a 10 year old 16mhz 8 bit controller is just not powerful enough.



*You can upgrade, and enable a few new thing, but not all the new things

Try the following link (if that's allowed)
[marlinfw.org]
It takes you to the configuring Marlin site. I'm pretty sure you can work your problems through there.
I hope this helps.

Looks good.
The only Problem is, that I can‘t find the old Code. Seems Like it’s only in the Chip.
Read-out isn‘t possible or am I wrong?

you can extract a binary, but you cannot make source for that binary

that like trying to get the ingredients list from a cake.