diff --git a/data/computercraft/lua/rom/programs/turtle_miner.lua b/data/computercraft/lua/rom/programs/turtle_miner.lua
index fbd5215..8b53ddd 100644
--- a/data/computercraft/lua/rom/programs/turtle_miner.lua
+++ b/data/computercraft/lua/rom/programs/turtle_miner.lua
@@ -271,18 +271,18 @@ local function startMining()
       print("Mining...")
       turtle.dig()
       -- 检查是否有掉落物需要捡起
-      _G.os.sleep(0.5)
+      -- os.sleep(0.5)
     end
     
     -- 检查上方是否有方块可以挖掘
     if turtle.detectUp() then
       print("Mining above...")
       turtle.digUp()
-      _G.os.sleep(0.5)
+      -- os.sleep(0.5)
     end
     
     -- 短暂延迟避免CPU占用过高
-    _G.os.sleep(0.1)
+    -- os.sleep(0.1)
   end
   
   print(colors.yellow .. "Auto mining stopped." .. colors.white)
diff --git a/installer.lua b/installer.lua
index efeef1f..41996c4 100644
--- a/installer.lua
+++ b/installer.lua
@@ -1,5 +1,5 @@
 -- LeonOS installer
-local INSTALLER_VERSION = "0.3.8 Beta 10"
+local INSTALLER_VERSION = "0.3.8 Beta 11"
 local DEFAULT_ROM_DIR = "/leonos"
 
 print("Start loading LeonOS installer ("..INSTALLER_VERSION..")...")