diff --git a/docs/flasher.md b/docs/flasher.md
index 11f7be8..0338bec 100644
--- a/docs/flasher.md
+++ b/docs/flasher.md
@@ -1,6 +1,7 @@
 
 # Online flasher
   
-is available in Google Chrome and Microsoft Edge browsers.  
+Available in Google Chrome and Microsoft Edge browsers.  
+If you falsh your Ulanzi Clock the first time you need to check "erase".
   
 [filename](flasher/index.html ':include :type=iframe')