diff --git a/public/bt09/B2.8C/B2.8C_User_Guide.pdf b/public/bt09/B2.8C/B2.8C_User_Guide.pdf
new file mode 100644
index 0000000..1c8de42
Binary files /dev/null and b/public/bt09/B2.8C/B2.8C_User_Guide.pdf differ
diff --git a/public/bt09/B2.8C/B2.8C使用说明书.pdf b/public/bt09/B2.8C/B2.8C使用说明书.pdf
new file mode 100644
index 0000000..1c8de42
Binary files /dev/null and b/public/bt09/B2.8C/B2.8C使用说明书.pdf differ
diff --git a/sahur-20250731.tar b/sahur-20250731.tar
deleted file mode 100644
index c6c5e80..0000000
Binary files a/sahur-20250731.tar and /dev/null differ