I remember working with switches and routers for the first time and I came across a Juniper router who when I did an upgrade I had the option to issue a command

I remember working with switches and routers for the first time and I came across a Juniper router who when I did an upgrade I had the option to issue a command to just fall back ... the same applied to config changes and so on. At the time some other systems kinda had this system (sometimes not so great), but Juniper had perfected it. These vehicles really should have a similar dual partition setup where you can on your own go into the menu and say "Yo, things broke, go back." and you're good to go. Based on the last paragraph it sounds like Jeep ... might have such a system, but it isn't clear.