Changing focus in telnet within a stack of 4500s

[All_Elements]

Hi,

It's been a long time since I've done this, but could somebody be kind enough to remind me how to change focus from one unit to another within a telnet session to a stack of 4500s please?

I want to perform a software upgrade to a stack of three 4500s, and need to change focus to unit 2 and unit 3 to delete the old software images, freeing space for the new one.

I'm currently stuck on unit 1, and have totally forgotten how to change units. I'm guessing it might be 'display fabric-xrn', but not too sure.

Many thanks in advance.

[All_Elements]

I've found the commands I was after:

boot bootrom unit2>flash:/s3o04_06.btm

and

boot boot-loader unit2>flash:/s3n03_03_02s168p15.app

Both commands can be issued from unit1.