MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

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I just upgraded mine from stock 2 days ago! I was a bit nervous about going through with it, but I found this script on github that made the process smooth as butter. Do have a linux system or a Raspberry Pi?

I ran the script on my octoprint server that's always plugged into the Anet... The upgrade process was about as easy as it gets.

Here's the script:
there's a link in the readme that goes into further detail about the Anet printers.

For me the process went something like this:

clone the git repository
run ./ -s to setup arduino toolchain
run ./ -m to clone the marlin firmware and it's dependencies
override the default Configuration.h and Configuration_adv.h files with the files in example_configurations/Anet/A8/ - I left mine default the first time, but you can look at these and adjust them to your liking.
run ./ -u to build and upload to the Anet board.

This is certainly going to make my future upgrades and firmware tweaks easy as can be. I just edit the config on the Pi and issue the command to update. Three minutes later, the firmware is re-flashed.

I do wish I would have recorded my eeprom settings prior to this process. I think it was something I did to wipe them out, but the printer seems fine and reasonably accurate now, even with the default configs. Even if you mess that up like me, you'll be able to access most of the important settings for tuning and calibration through the panel on the printer once you have the new firmware installed.

I am incredibly pleased with he marlin firmware, there's a few things i still need to tweak, but so far it's performing very nicely.