RouterOS downgrade

RouterOS General
1

Hi,

I have a routerboard 911 AC with the version 6.33.4.

I want to downgrade to the version 6.27.

I upload the 6.27 file, went to system/packages and downgrade and when reboot nothing happen.

Anyone knows how to do this?

Thanks

2

It is not possible to downgrade below Factory installed version.

What is reason you Don’t want to use latest versions of RouterOS, but more then year old version ?