DSM7降级DSM6

参考文章:《群晖DS216+II安装DSM 7.0 Beta降级为6.2.4教程》

1.SSH连接NAS,修改version文件

[email protected]:~$ sudo su -
We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

#1) Respect the privacy of others.
#2) Think before you type.
#3) With great power comes great responsibility.
[email protected]:~#vi /etc.defaults/VERSION

2.在群辉官网上查找待降级的版本号对应的信息,例子是降级到6.2.4-25556-5,下载的对应文件是synology_88f6281_112j.pat,根据以上信息我们找到一个比6.2.4要旧的版本6.2.1-23824,用这个版本的信息 来修改原来的VERSION文件:

majorversion="6"
minorversion="2"
productversion="6.2.1"
buildphase="GM"
buildnumber="23824"
smallfixnumber="0"
builddate="2018/10/30"
buildtime="03:57:54"

3.修改好之后要手动关机后再开机,使用Synology Assistant手动安装synology_88f6281_112j.pat
4.到出错界面后使用Telnet修改同一个文件为步骤2的内容,即可继续降级。