[求助]N1无法更新OpenWrt固件

pre***

前期PDD购入N1，已刷OpenWrt。内核版本为5.4.150-flippy-65+o，固件版本为OpenWrt R21.10.1 / LuCI Master (git-21.273.48290-ff4b0f6)。


现准备升级版本到openwrt_s905d_n1_R23.11.09_k5.15.138-flippy-86+o。
目前U盘制作好，可以启动。但是无法写入到EMCC，提示无法卸载分区；

1. Please choose:11

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在线更新提示：BOOT分区不存在

1. root@OpenWrt:~# cd /mnt/mmcblk2p4
   
2. root@OpenWrt:/mnt/mmcblk2p4# ll
   
3. drwxr-xr-x    5 root     root          4096 Jan 23 23:10 ./
   
4. drwxr-xr-x    1 root     root           152 Jan 23 20:40 ../
   
5. drwxr-xr-x    3 root     root          4096 Nov 18  2021 AdGuardHome/
   
6. drwx--x--x   15 root     root          4096 Jan 23 20:41 docker/
   
7. drwx------    2 root     root         16384 Nov  1  2021 lost+found/
   
8. -rw-r--r--    1 root     root     943718400 Jan 23 23:12 openwrt_s905d_n1_R23.11.09_k5.15.138-flippy-86+o.img
   
9. -rw-r--r--    1 root     root           119 Jan 23 23:10 openwrt_s905d_n1_R23.11.09_k5.15.138-flippy-86+o.img.sha256sum.txt
   
10. -rwxrwxrwx    1 root     root         27484 Jan 21 02:29 update-amlogic-openwrt.sh*
    
11. root@OpenWrt:/mnt/mmcblk2p4# ./update-amlogic-openwrt.sh openwrt_s905d_n1_R23.11.09_k5.15.138-flippy-86+o.img
    
12. Current device: Phicomm N1 [ amlogic ]
    
13. Update using [ openwrt_s905d_n1_R23.11.09_k5.15.138-flippy-86+o.img ] file. Please wait a moment ...
    
14. Start update from [ openwrt_s905d_n1_R23.11.09_k5.15.138-flippy-86+o.img ]
    
15. Check the necessary dependencies...
    
16. lsblk path: /usr/bin/lsblk
    
17. uuidgen path: /usr/bin/uuidgen
    
18. grep path: /bin/grep
    
19. awk path: /usr/bin/awk
    
20. btrfs path: /usr/bin/btrfs
    
21. mkfs.fat path: /usr/sbin/mkfs.fat
    
22. mkfs.btrfs path: /usr/bin/mkfs.btrfs
    
23. md5sum path: /usr/bin/md5sum
    
24. fatlabel path: /usr/sbin/fatlabel
    
25. Check passed
    
26. Boot The partition does not exist, so the update cannot be continued!
    
27. root@OpenWrt:/mnt/mmcblk2p4#
    

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另外想咨询如何备份当前系统，以防万一，可以用来恢复。
求各位大佬指导下，给点建议、思路、关键词、链接都行。。最后感谢、感谢、再感谢。

pre***

无法写入到EMCC，提示无法卸载分区：

1. Please choose:11
   
2. AMLOGIC_SOC Value[ s905d ]
   
3. FDTFILE Value [meson-gxl-s905d-phicomm-n1.dtb ]
   
4. MAINLINE UBOOT Value []UBOOT_OVERLOAD Value [u-boot-n1.bin ]
   
5. K510[0]
   
6. ANDROID_UBooT Value [/lib/u-boot/u-boot-2015-phicomm-n1.bin ]
   
7. /mnt/mmcblk2p4 umount -f
   
8. /mnt/mmcblk2p4 umount: /mnt/mmcblk2p4: target is busy.
   
9. /mnt/mmcblk2p4 Cannot be uninstalled, the installation process is aborted.

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ga***

你执行一下 mount 还有 df 两个命令看看，


到底emmc（一般是 /dev/mmcblk0或者1）在干嘛呢，无法卸载

pre***

gaze 发表于 2024-1-23 23:44
你执行一下 mount 还有 df 两个命令看看，

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Base on OpenWrt R23.11.09 by lean & lienol
Kernel 5.15.138-flippy-86+o
Packaged by flippy on 2023-11-09
PLATFORM: amlogic  SOC: s905d  BOARD: n1

设备信息： Phicomm N1
CPU 型号:  AArch64 : Cortex-A53 x 4
系统负载:  0.23 0.27 0.13       运行时间:  4分钟 53秒
环境温度:  38.0 °C              当前频率:  667 Mhz
内存已用:  12% of 1810MB        IP  地址:  192.168.1.1
启动存储:  58% of 157.5M        系统存储:  89% of 736.0M

root@OpenWrt:~# mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=791008k,nr_inodes=197752,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,noexec,relatime,size=185360k,mode=755)
/dev/sda2 on / type btrfs (rw,noatime,compress=zstd:6,space_cache=v2,subvolid=5,subvol=/)
proc on /proc type proc (rw,nosuid,nodev,noexec,noatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime)
tmpfs on /dev type tmpfs (rw,nosuid,noexec,noatime,size=512k,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,noatime,mode=600,ptmxmode=000)
cgroup on /sys/fs/cgroup type tmpfs (rw,relatime,mode=755)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,relatime,cpuset)
cgroup on /sys/fs/cgroup/cpu type cgroup (rw,relatime,cpu)
cgroup on /sys/fs/cgroup/cpuacct type cgroup (rw,relatime,cpuacct)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,relatime,blkio)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,relatime,memory)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,relatime,freezer)
cgroup on /sys/fs/cgroup/net_cls type cgroup (rw,relatime,net_cls)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,relatime,perf_event)
cgroup on /sys/fs/cgroup/net_prio type cgroup (rw,relatime,net_prio)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,relatime,hugetlb)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,relatime,pids)
cgroup on /sys/fs/cgroup/rdma type cgroup (rw,relatime,rdma)
cgroup on /sys/fs/cgroup/misc type cgroup (rw,relatime,misc)
debugfs on /sys/kernel/debug type debugfs (rw,noatime)
bpffs on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,noatime,mode=700)
pstore on /sys/fs/pstore type pstore (rw,noatime)
/dev/sda4 on /mnt/sda4 type btrfs (rw,relatime,space_cache=v2,subvolid=5,subvol=/)
/dev/mmcblk2p4 on /mnt/mmcblk2p4 type ext4 (rw,relatime)
/dev/mmcblk2p2 on /mnt/mmcblk2p2 type btrfs (rw,relatime,ssd,space_cache,subvolid=5,subvol=/)
/dev/sda3 on /mnt/sda3 type btrfs (rw,relatime,space_cache=v2,subvolid=5,subvol=/)
/dev/sda1 on /boot type vfat (rw,relatime,uid=65534,gid=65534,fmask=0000,dmask=0000,allow_utime=0022,codepage=437,iocharset=utf8,shortname=mixed,utf8,errors=remount-ro)
/dev/mmcblk2p3 on /mnt/mmcblk2p3 type btrfs (rw,relatime,ssd,space_cache,subvolid=5,subvol=/)
/dev/mmcblk2p1 on /mnt/mmcblk2p1 type vfat (rw,relatime,uid=65534,gid=65534,fmask=0000,dmask=0000,allow_utime=0022,codepage=437,iocharset=utf8,shortname=mixed,utf8,errors=remount-ro)
mountd(pid4863) on /tmp/run/blockd type autofs (rw,relatime,fd=7,pgrp=4863,timeout=30,minproto=5,maxproto=5,indirect)
/dev/sda4 on /mnt/sda4/docker type btrfs (rw,relatime,space_cache=v2,subvolid=5,subvol=/)
nfsd on /proc/fs/nfsd type nfsd (rw,relatime)
root@OpenWrt:~# df
Filesystem           1K-blocks      Used Available Use% Mounted on
udev                       512         0       512   0% /dev
tmpfs                   185360       140    185220   0% /run
/dev/sda2               753664    604572     77252  89% /
tmpfs                   926792     23256    903536   3% /tmp
tmpfs                      512         0       512   0% /dev
cgroup                  926792         0    926792   0% /sys/fs/cgroup
/dev/sda4             28884992      3852  28343124   0% /mnt/sda4
/dev/mmcblk2p4         4725096   2509128   1955260  56% /mnt/mmcblk2p4
/dev/mmcblk2p2          983040    665376    241776  73% /mnt/mmcblk2p2
/dev/sda3               753664      3616    660992   1% /mnt/sda3
/dev/sda1               161295     93198     68097  58% /boot
/dev/mmcblk2p3          983040      3456    969728   0% /mnt/mmcblk2p3
/dev/mmcblk2p1          523248     65828    457420  13% /mnt/mmcblk2p1
/dev/sda4             28884992      3852  28343124   0% /mnt/sda4/docker
root@OpenWrt:~#

pre***

pretty 发表于 2024-1-24 00:07
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Base on OpenWrt R23.11.09 by lean & lienol
Kernel ...

alail***

我记得当时好像是哪个版本改那个分区划分来着，不能直接升级，我猜应该是这个原因。你刷web大的电视系统，然后再用u盘刷新系统应该就行

rul***

楼主解决了吗？