diff --git a/Zigbee.md b/Zigbee.md
index e991bb5e..e4da845a 100644
--- a/Zigbee.md
+++ b/Zigbee.md
@@ -163,6 +163,8 @@ The CC2530 requires `Z-Stack_Home_1.2`, of type `Default` (not `Source Routing`)
    Completed
    ```
 
+   _If you don't see any on screen activity within a couple minutes that flashing has begun (i.e., progress percentages increasing), then abort the command, cycle power on the ESP82xx, and start this step over._
+
 Additional References:
 - Flashing with a Wemos D1 Mini or equivalent and `CCLib` is described in greater detail in [this blog post](https://www.zigbee2mqtt.io/information/alternative_flashing_methods.html).
 - [Koen Kanters](https://github.com/Koenkk) [Z-Stack CC2530 firmware files](https://github.com/Koenkk/Z-Stack-firmware/tree/master/coordinator/Z-Stack_Home_1.2/bin/default).