Configurations VS Marlin_Ender3v2

Check Marlin‘s configuration repository at https://github.com/MarlinFirmware/Configurations for your specific board …

Go to the marlin github https://github.com/MarlinFirmware/Marlin and download the latest stable or bugfix release. Also, download the configurations that match the version of the firmware you downloaded https://github.com/MarlinFirmware/Configurations

Generally you would start with the Example config files from the Marlin Github https://github.com/MarlinFirmware/Configurations/tree/import-2.1.x/config/example

download Marlin configurations folder v2.0.9.6 from https://github.com/MarlinFirmware/Configurations

Current release, not bugfix branch? Started from the example config for your printer corresponding to the version of Marlin you downloaded?

Download the Marlin Example configs > https://github.com/MarlinFirmware/ConfigurationsThis contains the pre written configs for most popular printers so much of the config work is already done for you

I would add the Auto Build Marlin plugin (as well as PlatformIO) to your VS Code install, download the latest stable version of Marlin from the official source, along with the configuration examples. Copy the example Configuration.h and Configuration_adv.h for the Ender 3 Pro with Mini E3 V3, to your Marlin folder and compile that. The only important difference between an Ender 3 Pro and an Ender 3 V2, as far as firmware is concerned, is the V2 display, which you're not using, so don't use any of the config examples for a V2. The Pro version should have the correct serial port assignments:

From what I'm reading, mriscoc's firmware appears to be a bit more polished and offers even more features than Jyers. Have a look at their page - https://github.com/mriscoc/Marlin_Ender3v2/releases/latest From what I'm reading you can change the bed dimensions via gcode command and also in the advanced settings menu. I'm going to try this route despite having already downloaded all the software to compile my own jyers firmware..

Download the bin file from here https://github.com/mriscoc/Marlin_Ender3v2/releases/latest.

By any chances are you using the Jyers firmware? Because that firmware works horrible with a lot of probes. Try the Professional Firmware, I never had a probe crashing problem with that one.

Once you tram the bed, are you doing a mesh? I use UBL (Unified Bed Leveling) to do a 15x15 mesh that takes approximately 225 points of readings. If you are using Jyers firmware, which I highly recommend) or Professional firmware by mriscoc, both rimwares based on Marlin but are more rich in features than the base Marlin firmware, you can view the mesh on your display and see where the high/low spots are. The mesh can be saved to your EEPROM and used without having to redo the leveling process all the time. This is, of course, providing that your bed is not shifting and you wait for the bed to cool down before removing the prints so it doesn't mesh of the leveling. I am not sure about the Professional firmware (because I don't use that one) but I do know the Jyers firmware has a bunch of precompiled .bin files for all the boards and for many different configurations.

https://github.com/Jyers/Marlin/releases or https://github.com/mriscoc/Marlin_Ender3v2/releases

I am using a modified Jyers firmware from here: https://github.com/mriscoc/Marlin_Ender3v2

i use https://github.com/mriscoc/Marlin_Ender3v2 and i am very happy with it