要求能刷机安装那啥软件,不需要无线

现在的路由器ac86u忽然变得非常慢，看日志有
May 30 08:07:42 rc_service: watchdog 1445:notify_rc start_cfgsync
May 30 08:08:16 kernel: bcm63xx_nand ff801800.nand: timeout waiting for command 0x4
May 30 08:08:16 kernel: bcm63xx_nand ff801800.nand: intfc status c80000e0
May 30 08:08:22 rc_service: watchdog 1445:notify_rc start_amas_lanctrl
May 30 08:08:22 rc_service: watchdog 1445:notify_rc start_cfgsync
May 30 08:08:59 rc_service: watchdog 1445:notify_rc start_amas_lanctrl
May 30 08:09:00 rc_service: watchdog 1445:notify_rc start_cfgsync
May 30 08:09:39 rc_service: watchdog 1445:notify_rc start_amas_lanctrl
May 30 08:09:39 rc_service: watchdog 1445:notify_rc start_cfgsync
May 30 08:09:57 kernel: bcm63xx_nand ff801800.nand: timeout waiting for command 0x4
May 30 08:09:57 kernel: bcm63xx_nand ff801800.nand: intfc status c80000e0
May 30 08:10:00 rc_service: service 32196:notify_rc restart_letsencrypt
May 30 08:10:00 Let's_Encrypt: Err, NTP time not sync.

网上搜了下说可能路由器坏了
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修改:chylli FROM 124.132.72.*
FROM 39.68.178.*