diff --git a/Overview.md b/Overview.md
index 1c6ce5e..93cb2a0 100644
--- a/Overview.md
+++ b/Overview.md
@@ -40,4 +40,6 @@ Since all cartridge slots are wired in parallel you are only allowed to plug in
 
 Before dumping a cartridge you should clean the gold contacts with a q-tip dipped in rubbing alcohol until it does not come out black anymore.    
 
-![image](https://dl.dropboxusercontent.com/s/ju1q5g03jvt4iq8/cleancontacts.jpeg?dl=1)      
\ No newline at end of file
+![image](https://dl.dropboxusercontent.com/s/ju1q5g03jvt4iq8/cleancontacts.jpeg?dl=1)
+
+You should also only insert or remove cartridges while the Cart Reader is turned off, and not have any cart inserted while you are doing a firmware update.
\ No newline at end of file