diff --git a/Compiled/README.md b/Compiled/README.md
index 5467625..d0d37bc 100644
--- a/Compiled/README.md
+++ b/Compiled/README.md
@@ -2,7 +2,7 @@ This folder contains compiled OpenGarage firmware files.
 
 To use OTA (over-the-air) update:
 
-* Please note to upgrade to Firmware 1.2.0 and above you need to have ESP8266 WiFi chip with 4MB flash. The very early versions of OpenGarage (v1.0 and v1.1) unfortunately do not qualify as they only have 2MB flash. All later versions (v1.3, v1.4, v2.0 and above) have 4MB flash.
+* Please note to upgrade to Firmware 1.2.0 and above you need to have ESP8266 WiFi chip with 4MB flash. The very early versions of OpenGarage (v1.0 and v1.1) unfortunately do not qualify as they only have 2MB flash. All later versions (v1.3, v1.4, v2.0 and above) have 4MB flash. Please also note that upgrading from earlier firmwares to firmware 1.2.0 ***will trigger*** a factory reset (due to flash memory layout changes). You are advised to copy/write down your existing settings before proceeding with the firmware update. 
 
 * Download the specific firmware file (e.g. og_x.x.x.bin)