diff --git a/CustomROMs/AsteroidOS.md b/CustomROMs/AsteroidOS.md
index 26deb26..95050df 100644
--- a/CustomROMs/AsteroidOS.md
+++ b/CustomROMs/AsteroidOS.md
@@ -29,6 +29,7 @@ adb devices
 ```
 
 ## go into fastboot mode and list fastboot devices
+- also possible with button: hold power button (lower one) 20 sec., then with upper button select fastboot and press lower button again
 ```bash
 adb reboot bootloader
 fastboot devices