diff --git a/README.md b/README.md
index 289c595..096f2f8 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,10 @@
 
 ### run
 - frontend `bun dev --host` 
-- backend `cd ./backend-php/; ./dev.ps1` or `cat ./dev.ps1 | sh` if you are in other os
+- backend `cd ./backend-php/`
+  - make sure that you have `pdo_sqlite`
+  - oonix `chmod +x ./dev.sh` and then `./dev.sh`
+  - uindos `cat ./dev.sh | iex` in poersel
 
 ### IMPORTANT
 
diff --git a/backend-php/dev.ps1 b/backend-php/dev.ps1
deleted file mode 100644
index 654b2f0..0000000
Binary files a/backend-php/dev.ps1 and /dev/null differ
diff --git a/backend-php/dev.sh b/backend-php/dev.sh
new file mode 100755
index 0000000..1f996ed
--- /dev/null
+++ b/backend-php/dev.sh
@@ -0,0 +1 @@
+php -S 0.0.0.0:8321