diff --git a/Sonoff-RF-Bridge-433.md b/Sonoff-RF-Bridge-433.md
index 68caec3c..25fee576 100644
--- a/Sonoff-RF-Bridge-433.md
+++ b/Sonoff-RF-Bridge-433.md
@@ -42,7 +42,7 @@ See [RF Commands](https://github.com/arendst/Sonoff-Tasmota/wiki/Commands#sonoff
 3. Power up the bridge via the 3.3V & GND pins. (See below if you need the USB power)
 4. Go to the Web UI **Firmware Upgrade** > **Upgrade by File Upload**
     * Available since Tasmota v6.0.0a
-    * Make sure you have set module to "Sonoff Bridge" otherwise you may get `error "Magic byte is not 0xE9"`
+    * Make sure you have set module to "Sonoff Bridge" and use the latest hex file, otherwise you may get `error "Magic byte is not 0xE9"`
 5. Select the .hex firmware file of your choosing.
     1. In Sonoff-Tasmota package under [tools/fw_efm8bb1](https://github.com/arendst/Sonoff-Tasmota/tree/master/tools/fw_efm8bb1) folder.
         * These are also Portisch firmware but may not be the latest.