diff --git a/README.md b/README.md
index 60eed79..2b7a9d7 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@
   <summary><b>ChangeLog</b></summary>
   
 ````
+== 2025-07-02
+   * Bugfix: DSM0 "CRC32:0x63F R:1"
 == 2024-06-15
    * Enhancement: 
      * T1 Clock - resets to begin after 200milis silence
diff --git a/platformio.ini b/platformio.ini
index 6270582..abd09b5 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -10,7 +10,7 @@
 [env:squares-and-circles]
 apps_json = ./app/index.json
 extra_scripts = build.py
-squares_and_circles_loader = f2e9e49    ; minimum loader version
+squares_and_circles_loader = a751cf7    ; minimum loader version
 platform = teensy@5.0.0                 ; https://github.com/platformio/platform-teensy/releases
 board = teensy41                        ; fake setting - the engines are compatibe with all targets