diff --git a/Sonoff-RF-Bridge-433.md b/Sonoff-RF-Bridge-433.md
index 9cbc5e23..66b9787d 100644
--- a/Sonoff-RF-Bridge-433.md
+++ b/Sonoff-RF-Bridge-433.md
@@ -36,7 +36,7 @@ See [Supported Commands](https://github.com/arendst/Sonoff-Tasmota/wiki/Commands
 
 By updating the firmware of the Rf chip (or co-processor, microcontroller) EFM8BB1 new possibilities become available. Starting with Tasmota v6.0.0a the Rf chip firmware upgrade is easily done using Web Gui Upgrade by File Upload. Tasmota currently support the Portisch (https://github.com/Portisch/RF-Bridge-EFM8BB1) firmware only.
 
-A hardware preparation is needed if you want to use USB for powering the device during EFM flash process.
+A hardware preparation is needed (only for R2!) if you want to use USB for powering the device during EFM flash process.
 Shown picture is the Bridge R2 version where two  not used copper traces need to be cut if you want to use the current power connector during updating and connect two wires between GPIO4 and C2Ck and GPIO5 and C2D. These changes can be permanent as they do not interfere with the normal Bridge functionality and it also allows for easy changing of firmware in the future.
 
 **You dont have to cut wires to upgrade the firmware of R2!!!!**