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ac2100_upgrade.sh

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+#!/bin/sh
+# 红米 AC2100 一键升级脚本（路由器本地运行）
+# 用法: wget -O- https://git.stickrouter.com/mike/AC2100/raw/branch/main/ac2100_upgrade.sh | sh
+
+FIRMWARE_URL="https://git.stickrouter.com/mike/AC2100/raw/branch/main/Red2100.bin"
+FIRMWARE_NAME="Red2100.bin"
+REMOTE_PATH="/tmp/${FIRMWARE_NAME}"
+
+echo ""
+echo "=================================================="
+echo "  红米 AC2100 一键升级脚本"
+echo "  固件来源: Gitea"
+echo "=================================================="
+echo ""
+
+# 检查剩余内存
+FREE_MEM=$(free | awk '/Mem/{print $4}')
+echo "[INFO] 当前可用内存: ${FREE_MEM}KB"
+
+if [ "${FREE_MEM}" -lt 30000 ]; then
+    echo "[WARN] 内存不足，尝试释放..."
+    echo 3 > /proc/sys/vm/drop_caches
+fi
+
+# 下载固件
+echo "[步骤 1/3] 下载固件到 ${REMOTE_PATH}..."
+if [ -f "${REMOTE_PATH}" ]; then
+    echo "[WARN] 已存在固件文件，跳过下载"
+else
+    wget -q --show-progress "${FIRMWARE_URL}" -O "${REMOTE_PATH}"
+    if [ $? -ne 0 ]; then
+        echo "[ERR] 固件下载失败，请检查网络"
+        exit 1
+    fi
+fi
+
+# 验证文件大小
+SIZE=$(wc -c < "${REMOTE_PATH}")
+echo "[INFO] 固件大小: ${SIZE} bytes"
+
+if [ "${SIZE}" -lt 1000000 ]; then
+    echo "[ERR] 固件文件异常，大小不正确"
+    rm -f "${REMOTE_PATH}"
+    exit 1
+fi
+
+echo "[步骤 2/3] 固件下载完成，准备升级..."
+echo ""
+echo "[WARN] 升级过程中请勿断电！"
+echo "[WARN] 路由器将自动重启，升级完成后访问 http://192.168.1.1"
+echo ""
+echo "5秒后开始升级，按 Ctrl+C 取消..."
+sleep 5
+
+# 执行升级
+echo "[步骤 3/3] 开始升级固件..."
+sysupgrade -F -n "${REMOTE_PATH}"