R2025-01-07 07:39:11 for ARMv8

升级降级方法统一为：
1. 把 update-xxxxxx-openwrt.sh 及解压后得到的 img 镜像上传至 /mnt/mmcblk2p4
2. cd /mnt/mmcblk2p4
3. chmod 755 update-xxxxxx-openwrt.sh
4. ./update-xxxxxx-openwrt.sh ./openwrt*.img