diff --git a/readme.txt b/readme.txt
index 9a8dfb1..4555af0 100644
--- a/readme.txt
+++ b/readme.txt
@@ -46,6 +46,7 @@ STS_O7 For Occupancy sensors
 2024-07-30  revert back ...not good for alarm so far
 2024-08-06  start focus on fall detection
 2024-08-06  a...
+2025-07-31  O6V2 add fade out fade in and nvm size to 128
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  */