diff --git a/data/computercraft/lua/bios.lua b/data/computercraft/lua/bios.lua
index 99836a4..5199833 100644
--- a/data/computercraft/lua/bios.lua
+++ b/data/computercraft/lua/bios.lua
@@ -1,4 +1,4 @@
-_G._HOST = _G._HOST .. " (LeonOS 1.0.0)"  
+_G._HOST = _G._HOST .. " (LeonOS 1.0.1)"  
 local fs = rawget(_G, "fs")
 
 _G._RC_ROM_DIR = _RC_ROM_DIR or (...) and fs.exists("/leonos") and "/leonos" or "/rom"
@@ -32,7 +32,7 @@ local rc = {
   _VERSION = {
     major = 1,
     minor = 0,  
-    patch = 0
+    patch = 1
   },
   queueEvent  = pull(os, "queueEvent"),
   startTimer  = pull(os, "startTimer"),
diff --git a/data/computercraft/lua/rom/programs/wget.lua b/data/computercraft/lua/rom/programs/wget.lua
index dc95568..64aa699 100644
--- a/data/computercraft/lua/rom/programs/wget.lua
+++ b/data/computercraft/lua/rom/programs/wget.lua
@@ -37,6 +37,7 @@ if args[1] == "run" then
   if not _G.colors then _G.colors = require("colors") end
   if not _G.textutils then _G.textutils = require("textutils") end
   if not _G.shell then _G.shell = require("shell") end
+  if not _G.http then _G.http = require("http") end
 
   -- 执行下载的代码
   local func, err = load(data, "=<wget-run>", "t", _G)
diff --git a/installer.lua b/installer.lua
index f2aa275..eda2755 100644
--- a/installer.lua
+++ b/installer.lua
@@ -1,5 +1,5 @@
 -- LeonOS installer
-local INSTALLER_VERSION = "1.0.0"
+local INSTALLER_VERSION = "1.0.1 Beta 1"
 local DEFAULT_ROM_DIR = "/leonos"
 
 print("Start loading LeonOS installer ("..INSTALLER_VERSION..")...")
diff --git a/updater.lua b/updater.lua
index fe10da0..dec1fc5 100644
--- a/updater.lua
+++ b/updater.lua
@@ -1,182 +1,348 @@
--- LeonOS updater: stage 2
+-- LeonOS Updater
+-- Version: 0.3.8
+-- This script ensures reliable updates for the LeonOS operating system
 
-local fs = rawget(_G, "fs")
-local term = rawget(_G, "term")
+-- Ensure core APIs are available
+local fs = rawget(_G, "fs") or error("Filesystem API not available")
+local term = rawget(_G, "term") or error("Terminal API not available")
 local http = rawget(_G, "http")
+if not http then
+  -- Try to load the http module if not directly available
+  local success
+  success, http = pcall(require, "http")
+  if not success then
+    error("HTTP API not available. Cannot perform update.")
+  end
+  _G.http = http
+end
 
+-- Configuration
 _G._RC_ROM_DIR = _RC_ROM_DIR or "/leonos"
 if _RC_ROM_DIR == "/rom" then _RC_ROM_DIR = "/leonos" end
 
--- fail-safe
-local start_rc = [[
-
-local fs = rawget(_G, "fs")
-local term = rawget(_G, "term")
-
-local w, h = term.getSize()
-local function at(x,y)
-  term.setCursorPos(x,y)
-  return term
-end
-
-term.setBackgroundColor(0x1)
-at(1,1).clearLine()
-at(1,h).clearLine()
-
-local title = "LeonOS Updater (Failure Notice)"
-term.setTextColor(0x4000)
-at(math.floor(w/2-#title/2), 1).write(title)
-
-for i=2, h-1, 1 do
-  term.setBackgroundColor(0x4000)
-  at(1,i).clearLine()
-end
-
-term.setTextColor(0x1)
-local message = {
-  "A LeonOS update has failed or",
-  "been interrupted.  Your files are",
-  "intact.",
-  "",
-  "Press any key to revert to the ROM.",
-  "",
-  "",
-}
-
-for i=1, #message, 1 do
-  at(3, i+2).write(message[i])
-end
-
-term.setCursorBlink(true)
-
-repeat local x = coroutine.yield() until x == "char"
-
-pcall(fs.delete, _RC_ROM_DIR)
-pcall(fs.delete, "/.start_rc.lua")
-
-os.reboot()
-while true do coroutine.yield() end
-
-]]
-
-local function at(x,y)
-  term.setCursorPos(x,y)
-  return term
-end
-
-local handle = fs.open("/.start_rc.lua", "w")
-handle.write(start_rc)
-handle.close()
-
-assert(pcall(function()
-local w, h = term.getSize()
-
-local function dl(f)
-  local hand, err = http.request(f, nil, nil, true)
-  local evt
-  repeat
-    evt = table.pack(coroutine.yield())
-  until evt[1] == "http_success" or evt[1] == "http_failure"
-
-  if evt[1] == "http_failure" then
-    term.at(1, h).write(evt[3] or "Unknown HTTP error")
-
-    local id = os.startTimer(5)
-    repeat local _,i = coroutine.yield() until i == id
+local REPO_OWNER = "Leonmmcoset"
+local REPO_NAME = "LeonOS"
+local BRANCH = "main"
+local BASE_PATH = "data/computercraft/lua/"
 
+-- Fail-safe mechanism
+local function createFailsafe()
+  local start_rc = [[
+    local fs = rawget(_G, "fs")
+    local term = rawget(_G, "term")
+    
+    local function setupScreen()
+      local w, h = term.getSize()
+      term.setBackgroundColor(0x4000) -- Red background
+      term.clear()
+      
+      local title = "LeonOS Updater (Failure Notice)"
+      term.setTextColor(0x1) -- White text
+      local x = math.floor(w/2 - #title/2)
+      term.setCursorPos(x > 1 and x or 1, 1)
+      term.write(title)
+      
+      local message = {
+        "A LeonOS update has failed or",
+        "been interrupted.",
+        "Your files should remain intact.",
+        "",
+        "Press any key to revert to the ROM."
+      }
+      
+      for i, line in ipairs(message) do
+        term.setCursorPos(math.floor(w/2 - #line/2), i + 3)
+        term.write(line)
+      end
+      term.setCursorBlink(true)
+    end
+    
+    -- Setup the screen and wait for user input
+    setupScreen()
+    repeat local event = {coroutine.yield()} until event[1] == "char" or event[1] == "key"
+    
+    -- Cleanup and reboot
+    pcall(fs.delete, _RC_ROM_DIR)
+    pcall(fs.delete, "/.start_rc.lua")
+    
     os.reboot()
     while true do coroutine.yield() end
-
-  else
-    hand = evt[3]
-
-    local data = hand.readAll()
-    hand.close()
-
-    return data
-  end
-end
-
-local function ghload(f, c)
-  return assert(loadstring(dl("https://raw.githubusercontent.com/"..f),
-    "=ghload("..(c or f)..")"))()
-end
-
-local json = ghload("rxi/json.lua/master/json.lua", "json")
-
-local function header()
-  term.setTextColor(0x10)
-  at(1, 1).clearLine()
-  at(1, 1).write("LeonOS Updater (Stage 2)")
-  at(1, 2).clearLine()
-  at(1, 2).write("===========================")
-  term.setTextColor(0x1)
-end
-
-local y = 1
-local function write(text)
-  if y > h-3 then
-    term.scroll(1)
-    header()
-  else
-    y = y + 1
-  end
-  at(1, y+2).write(text)
-end
-
-header()
-
-write("Getting repository tree...")
-
-local repodata = json.decode(dl("https://api.github.com/repos/Leonmmcoset/LeonOS/git/trees/primary?recursive=1"))
-
-write("Filtering files...")
-
-local look = "data/computercraft/lua/"
-local to_dl = {}
-for _, v in pairs(repodata.tree) do
-  if v.path and v.path:sub(1,#look) == look then
-    v.path = v.path:sub(#look+1)
-    v.real_path = v.path:gsub("^/?rom", _RC_ROM_DIR)
-    to_dl[#to_dl+1] = v
-  end
-end
-
-write("Creating directories...")
-
-for i=#to_dl, 1, -1 do
-  local v = to_dl[i]
-  if v.type == "tree" then
-    fs.makeDir(fs.combine(v.real_path))
-    table.remove(to_dl, i)
-  end
-end
-
-write("Downloading files...")
-
-local function progress(a, b)
-  at(1, 3).clearLine()
-  term.setBackgroundColor(0x1)
-  at(1, 3).write((" "):rep(math.ceil((w-2) * (a/b))))
-  term.setBackgroundColor(0x8000)
-end
-
-for i=1, #to_dl do
-  local v = to_dl[i]
-  if v.type == "blob" and v.real_path ~= "unbios.lua" then
-    local data = dl("https://gh.catmak.name/https://raw.githubusercontent.com/Leonmmcoset/LeonOS/refs/heads/main/data/computercraft/lua/"..v.path)
-    write(v.real_path)
-    progress(i, #to_dl)
-    if v.real_path == "bios.lua" then
-      v.real_path = "/.start_rc.lua"
-    end
-    local handle = fs.open(v.real_path, "w")
-    handle.write(data)
+  ]]
+  
+  local handle, err = fs.open("/.start_rc.lua", "w")
+  if handle then
+    handle.write(start_rc)
     handle.close()
+  else
+    error("Failed to create failsafe: " .. (err or "unknown error"))
   end
 end
 
-os.reboot()
-while true do coroutine.yield() end
+-- Helper function to set cursor position
+local function at(x, y)
+  term.setCursorPos(x, y)
+  return term
+end
 
-end))
+-- HTTP request with error handling
+local function httpGet(url, timeout) 
+  timeout = timeout or 30
+  
+  local request = http.request(url, nil, nil, true)
+  if not request then
+    return nil, "Failed to initiate HTTP request"
+  end
+  
+  local startTime = os.clock()
+  while true do
+    local event = table.pack(coroutine.yield())
+    
+    if os.clock() - startTime > timeout then
+      return nil, "HTTP request timed out"
+    end
+    
+    if event[1] == "http_success" and event[2] == request then
+      local response = event[3]
+      local data = response.readAll()
+      response.close()
+      return data
+    elseif event[1] == "http_failure" and event[2] == request then
+      return nil, "HTTP request failed: " .. (event[3] or "unknown error")
+    end
+  end
+end
+
+-- Load JSON library
+local function loadJsonLib()
+  local jsonData, err = httpGet("https://raw.githubusercontent.com/rxi/json.lua/master/json.lua")
+  if not jsonData then
+    -- Try alternative source if first fails
+    jsonData, err = httpGet("https://raw.githubusercontent.com/meepdarknessmeep/json.lua/master/json.lua")
+    if not jsonData then
+      return nil, "Failed to load JSON library: " .. err
+    end
+  end
+  
+  local success, json = pcall(loadstring(jsonData, "json.lua"))
+  if not success then
+    return nil, "Failed to parse JSON library: " .. json
+  end
+  
+  return json()
+end
+
+-- Get current version from installer.lua
+local function getCurrentVersion()
+  if fs.exists(_RC_ROM_DIR .. "/installer.lua") then
+    local handle = fs.open(_RC_ROM_DIR .. "/installer.lua", "r")
+    if handle then
+      local content = handle.readAll()
+      handle.close()
+      
+      local version = content:match('local%s+version%s*=%s*"([^"]+)"')
+      if version then
+        return version
+      end
+    end
+  end
+  return "unknown"
+end
+
+-- Main update function
+local function updateSystem()
+  createFailsafe()
+  
+  -- Setup terminal
+  local w, h = term.getSize()
+  term.clear()
+  term.setBackgroundColor(0x8000) -- Blue background
+  term.setTextColor(0x1) -- White text
+  
+  -- Header function
+  local function header()
+    term.setBackgroundColor(0x8000)
+    term.setTextColor(0x10) -- Cyan text
+    at(1, 1).clearLine()
+    at(1, 1).write("LeonOS Updater")
+    at(1, 2).clearLine()
+    at(1, 2).write("=====================")
+    term.setTextColor(0x1)
+  end
+  
+  -- Write function with scrolling
+  local y = 1
+  local function write(text)
+    term.setBackgroundColor(0x8000)
+    if y > h - 3 then
+      term.scroll(1)
+      header()
+    else
+      y = y + 1
+    end
+    at(1, y + 2).write(text)
+  end
+  
+  -- Progress bar function
+  local function progress(a, b)
+    term.setBackgroundColor(0x8000)
+    at(1, 3).clearLine()
+    
+    local barWidth = w - 4
+    local progressWidth = math.ceil(barWidth * (a / b))
+    
+    term.setTextColor(0x1) -- White text for progress number
+    at(1, 3).write(string.format("%d/%d ", a, b))
+    
+    term.setBackgroundColor(0x1) -- White background for progress bar
+    at(#string.format("%d/%d ", a, b) + 1, 3).write(" ":rep(progressWidth))
+    
+    term.setBackgroundColor(0x8000) -- Reset to blue background
+  end
+  
+  -- Initialize header
+  header()
+  
+  -- Display current version
+  local currentVersion = getCurrentVersion()
+  write("Current version: " .. currentVersion)
+  
+  -- Load JSON library
+  write("Loading JSON library...")
+  local json, err = loadJsonLib()
+  if not json then
+    write("Error: " .. err)
+    write("Press any key to exit.")
+    term.setCursorBlink(true)
+    repeat local event = {coroutine.yield()} until event[1] == "char" or event[1] == "key"
+    return false
+  end
+  
+  -- Get repository tree
+  write("Getting repository file list...")
+  local repodata, err = httpGet("https://api.github.com/repos/" .. REPO_OWNER .. "/" .. REPO_NAME .. "/git/trees/" .. BRANCH .. "?recursive=1")
+  if not repodata then
+    write("Error: " .. err)
+    write("Press any key to exit.")
+    term.setCursorBlink(true)
+    repeat local event = {coroutine.yield()} until event[1] == "char" or event[1] == "key"
+    return false
+  end
+  
+  -- Parse repository data
+  local success, parsedData = pcall(json.decode, repodata)
+  if not success then
+    write("Error parsing repository data: " .. parsedData)
+    write("Press any key to exit.")
+    term.setCursorBlink(true)
+    repeat local event = {coroutine.yield()} until event[1] == "char" or event[1] == "key"
+    return false
+  end
+  
+  -- Filter files to download
+  write("Filtering files for download...")
+  local filesToDownload = {}
+  local directoriesToCreate = {}
+  
+  for _, entry in pairs(parsedData.tree) do
+    if entry.path and entry.path:sub(1, #BASE_PATH) == BASE_PATH then
+      local relativePath = entry.path:sub(#BASE_PATH + 1)
+      local realPath = relativePath:gsub("^/?rom", _RC_ROM_DIR)
+      
+      if entry.type == "tree" then
+        table.insert(directoriesToCreate, realPath)
+      elseif entry.type == "blob" and realPath ~= "unbios.lua" then
+        table.insert(filesToDownload, {
+          path = relativePath,
+          realPath = realPath
+        })
+      end
+    end
+  end
+  
+  write("Found " .. #filesToDownload .. " files to update.")
+  
+  -- Create directories
+  write("Creating necessary directories...")
+  for _, dirPath in ipairs(directoriesToCreate) do
+    pcall(fs.makeDir, dirPath)
+  end
+  
+  -- Download and write files
+  write("Downloading and installing files...")
+  local successCount = 0
+  local failCount = 0
+  local lastProgress = 0
+  
+  for i, fileInfo in ipairs(filesToDownload) do
+    local url = "https://raw.githubusercontent.com/" .. REPO_OWNER .. "/" .. REPO_NAME .. "/" .. BRANCH .. "/" .. BASE_PATH .. fileInfo.path
+    local content, err = httpGet(url)
+    
+    if content then
+      -- Ensure the directory exists
+      local dir = fs.getDir(fileInfo.realPath)
+      if not fs.isDir(dir) then
+        pcall(fs.makeDir, dir)
+      end
+      
+      -- Write the file
+      local handle, writeErr = fs.open(fileInfo.realPath, "w")
+      if handle then
+        handle.write(content)
+        handle.close()
+        successCount = successCount + 1
+        
+        -- Update progress bar if it changed significantly
+        local currentProgress = math.floor((i / #filesToDownload) * 10)
+        if currentProgress > lastProgress then
+          lastProgress = currentProgress
+          progress(i, #filesToDownload)
+        end
+      else
+        failCount = failCount + 1
+        write("Failed to write " .. fileInfo.realPath .. ": " .. (writeErr or "unknown error"))
+      end
+    else
+      failCount = failCount + 1
+      write("Failed to download " .. fileInfo.path .. ": " .. err)
+    end
+  end
+  
+  -- Final status
+  progress(#filesToDownload, #filesToDownload)
+  write("")
+  write("Update completed!")
+  write(string.format("Success: %d, Failed: %d", successCount, failCount))
+  
+  if failCount > 0 then
+    write("")
+    write("Some files failed to update.")
+    write("You may need to run the updater again.")
+  end
+  
+  write("")
+  write("Press any key to reboot and apply changes.")
+  term.setCursorBlink(true)
+  repeat local event = {coroutine.yield()} until event[1] == "char" or event[1] == "key"
+  
+  -- Cleanup and reboot
+  pcall(fs.delete, "/.start_rc.lua")
+  os.reboot()
+  while true do coroutine.yield() end
+end
+
+-- Run the update with error handling
+local success, err = pcall(updateSystem)
+if not success then
+  term.clear()
+  term.setBackgroundColor(0x4000)
+  term.setTextColor(0x1)
+  at(1, 1).write("LeonOS Update Error")
+  at(1, 3).write("An error occurred during the update:")
+  at(1, 5).write(err)
+  at(1, 7).write("Press any key to exit.")
+  term.setCursorBlink(true)
+  repeat local event = {coroutine.yield()} until event[1] == "char" or event[1] == "key"
+  
+  -- Try to cleanup
+  pcall(fs.delete, "/.start_rc.lua")
+end