There is a group of people who play with Black Wei, and they may need to update Debian to a higher version. Here is a simple solution:
Usually, create a partition through the ssh command, mount the partition, and then perform the following operations:
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Upload the image file of 6.1 to the ramboot folder of the sda7 partition.
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Extract and upload the boot to the boot folder of the sda7 partition.
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Overwrite the grub.cfg file in the sda1 partition with the grub file.
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Restart and enter Debian, use the ssh command to enter uname -r to observe the kernel version.
File download links:
Baidu Cloud Disk: https://pan.baidu.com/s/1ifJHIln6-Wh_4a3F0Nc1qA?pwd=p7dv
Extraction code: p7dv
Quark Cloud Disk: https://pan.quark.cn/s/e41c267a1627