Update fw_kobraOS.md

docs/firmware/fw_kobraOS.md

@@ -991,7 +991,13 @@ The following lists the content of the file `unmodifiable.cfg`.
     [probe]
     z_offset_adjust : 0.2
     ```
-
+
+---
+
+### MOD: Change Settings
+Due to the work of [daksimpson](https://klipper.discourse.group/u/daksimpson) it's possible to change settings in the abovementioned files `printer.cfg` and `unmodifiable.cfg`.  
+Please read [this post in the Klipper discourse group](https://klipper.discourse.group/t/printer-cfg-for-anycubic-kobra-2-plus-pro-max/11658/107) for further instructions!  
+
 ---
 
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