使用openwrt的小伙伴越來越多，大家比較熟悉的一般是用luci網(wǎng)頁(yè)升級(jí)，其中會(huì)有很多使用openwrt的小伙伴來問：openwrt用命令怎么升級(jí)固件？今天就來說說通過命令sysupgrade實(shí)現(xiàn)openwrt升級(jí)固件，脫離luci用命令行更新固件。使用命令行實(shí)現(xiàn)openwrt升級(jí)固件：

1、使用mobaxterm(等ssh終端工具登錄，passwd修改默認(rèn)密碼比如abcabc，然后路由器會(huì)自動(dòng)ssh模式，然后用ssh登錄路由器的（命令[email protected] 您的openwrt IP）。

2、使用winSCP，準(zhǔn)備好要刷的固件，然后用scp協(xié)議連接到路由器，然后上傳固件文件到tmp文件夾中。

3、上傳完成后，在ssh終端輸入命令 sysupgrade /tmp/openwrt-squashfs-sysupgrade.bin(這個(gè).bin文件是你之前上傳到tmp文件夾的固件，這個(gè)命令中的固件名稱也要改成你實(shí)際上傳的固件名稱來使用)

不清楚sysupgrade怎么用可以先全用命令sysupgrade --help 查看用法：

sysupgrade --help
Usage: /sbin/sysupgrade [<upgrade-option>...] <image file or URL>
/sbin/sysupgrade [-q] [-i] <backup-command> <file>

upgrade-option:
-d <delay>? ?add a delay before rebooting
-f <config>??restore configuration from .tar.gz (file or url)
-i? ?? ?? ???interactive mode
-c? ?? ?? ???attempt to preserve all changed files in /etc/
-n? ?? ?? ???do not save configuration over reflash
-T | --test
Verify image and config .tar.gz but do not actually flash.
-F | --force
Flash image even if image checks fail, this is dangerous!
-q? ?? ?? ???less verbose
-v? ?? ?? ???more verbose
-h | --help??display this help

backup-command:
-b | --create-backup <file>
create .tar.gz of files specified in sysupgrade.conf
then exit. Does not flash an image. If file is '-',
i.e. stdout, verbosity is set to 0 (i.e. quiet).
-r | --restore-backup <file>
restore a .tar.gz created with sysupgrade -b
then exit. Does not flash an image. If file is '-',
the archive is read from stdin.
-l | --list-backup
list the files that would be backed up when calling
sysupgrade -b. Does not create a backup file.

4、直接開始刷固件，等待刷機(jī)完成。升級(jí)完成后,系統(tǒng)會(huì)自動(dòng)重啟.......