R619AC 竞斗云 2.0 刷机教程，x-wrt系统

连接串口

路由器开机过程，串口不断输入 f + 回车直到进入安全模式

串口波特率是115200

启动到10秒左右看到如下提示按 f+enter就可以进入安全模式了
[    9.614211] init: - preinit -
[   10.218280] random: mktemp: uninitialized urandom read (6 bytes read, 71 bits of entropy available)
[   10.230614] random: mktemp: uninitialized urandom read (6 bytes read, 71 bits of entropy available)
[   10.243035] random: mktemp: uninitialized urandom read (6 bytes read, 71 bits of entropy available)
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
f
- failsafe -
/etc/preinit: line 1: telnetd: not found


BusyBox v1.25.1 (2018-02-17 15:42:05 CST) built-in shell (ash)

ash: can't access tty; job control turned off
     MM           NM                    MMMMMMM          M       M
   $MMMMM        MMMMM                MMMMMMMMMMM      MMM     MMM
  MMMMMMMM     MM MMMMM.              MMMMM:MMMMMM:   MMMM   MMMMM
MMMM= MMMMMM  MMM   MMMM       MMMMM   MMMM  MMMMMM   MMMM  MMMMM'
MMMM=  MMMMM MMMM    MM       MMMMM    MMMM    MMMM   MMMMNMMMMM
MMMM=   MMMM  MMMMM          MMMMM     MMMM    MMMM   MMMMMMMM
MMMM=   MMMM   MMMMMM       MMMMM      MMMM    MMMM   MMMMMMMMM
MMMM=   MMMM     MMMMM,    NMMMMMMMM   MMMM    MMMM   MMMMMMMMMMM
MMMM=   MMMM      MMMMMM   MMMMMMMM    MMMM    MMMM   MMMM  MMMMMM
MMMM=   MMMM   MM    MMMM    MMMM      MMMM    MMMM   MMMM    MMMM
MMMM$ ,MMMMM  MMMMM  MMMM    MMM       MMMM   MMMMM   MMMM    MMMM
  MMMMMMM:      MMMMMMM     M         MMMMMMMMMMMM  MMMMMMM MMMMMMM
    MMMMMM       MMMMN     M           MMMMMMMMM      MMMM    MMMM
     MMMM          M                    MMMMMMM        M       M
       M
---------------------------------------------------------------
   For those about to rock... (Chaos Calmer, unknown)
---------------------------------------------------------------
================= FAILSAFE MODE active ================
special commands:
* firstboot          reset settings to factory defaults
* mount_root     mount root-partition with config files

after mount_root:
* passwd                         change root's password
* /etc/config               directory with config files

for more help see:
http://wiki.openwrt.org/doc/howto/generic.failsafe

执行命令挂文件系统

mount_root

然后执行命令修改启动

sed -i 's/^#ttyM/ttyM/' /etc/inittab

重启

reboot

等待2-3分钟重启完成

回车进入控制台

执行两个命令，关闭烦人的日志

ifconfig wifi1 down
ifconfig wifi0 down

电脑开启一个简单的http服务器，网上有很多http服务器，自己找比如 CuteHttpFileServer

把改名固件 x-wrt-nand-factory.bin 放到http服务器

串口下载固件，假设电脑IP是 192.168.7.100 电脑要接网线连竟斗云lan口。

注意，wget 下载固件的地址，根据你实际情况写，这只是给个例子参考

wget -O /tmp/factory.bin http://192.168.7.100:8000/x-wrt-nand-factory.bin

下载完成

执行命令升级刷机

sysupgrade -n /tmp/factory.bin

等待5分钟

完成

注意，刷机用 nand-factory.bin 文件，后续升级，用 sysupgrade.bin 文件。https://dl.x-wrt.com:4443/rom//

R619AC 竞斗云 2.0 刷机教程，x-wrt系统

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