diff --git a/README.md b/README.md
index a97d791..df12330 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ BMBurner is a Arduino based EPROM Programmer that can Read/Write/Verify Chips (2
 2. Select the COM Port of your BMBurner (and the baudrate, default is 921600)
 3. Clic on 'Connect Device' button to connect to your BMBurner
 4. Clic on the 'Update Firmware' button!
+**If you have a BMBurner v2.5 or above, you must 'jump' the jumper nearby the ft232rl chipset with a paperclip by exemple and at the same time than you are clicking on the 'Update Firmware' button otherwise the firmware won't install in the BMBurner**
 
 # Compatible Chips List (for BMBurner V2.X):
 - 27C256 (Read-Only)