diff --git a/Installation-and-Upgrade.md b/Installation-and-Upgrade.md
index 85135ca..64fd604 100644
--- a/Installation-and-Upgrade.md
+++ b/Installation-and-Upgrade.md
@@ -18,6 +18,8 @@ Pick the correct folder for your device, and copy it to **aurei** folder.
 
 1. Follow the Installation section on this page
 1. Remove anything other than "payloads" folder in **aurei/**
+1. Edit your `<button>.bin` to `<button>_<name>.bin`, **make sure it's not longer than 13 characters including the ".bin"**. (e.g. y_uncart.bin)
+1. Edit your `default.bin` to `def_<payloadname>.bin`, **make sure it's not longer than 13 characters including the ".bin"**. (e.g. def_d9.bin)
 1. Boot.
 1. Reconfigure.