diff --git a/Installation-and-Upgrade.md b/Installation-and-Upgrade.md
index 2ed990b..e43d4e3 100644
--- a/Installation-and-Upgrade.md
+++ b/Installation-and-Upgrade.md
@@ -14,15 +14,22 @@ Pick the correct folder for your device, and copy it to **aurei** folder.
 
 ---
 
-## Upgrading to 5.1 from an older version
+## Upgrading to 5.1.1 from 4.3 or older
 
 1. Follow the Installation section on this page
 1. Remove anything other than "payloads" folder in **aurei/**
-1. Rename 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. Rename 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. (Optional) Rename 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. (Optional) Rename 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.
 
+## Upgrading to 5.1.1 from 5.0
+
+1. Follow the Installation section on this page
+1. (Optional) Rename 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. (Optional) Rename 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.
+
 ---
 
 ## Fixing GBA/DSiWare issues