mango update quick question need help please,

[sutt1576]

HEY

i see the mango update is starting to go live for people and after looking at microsoft site its shows in the uk that o2 are giing out the update. Windows Phone International Update Schedule | Mobile Software Updates | Windows Phone 7

my question is i have a unlocked htc 7 pro currently using a t-mobile sim can i take this out use my partners o2 sim to see if i can get the update then once updated transfer back to my t-mobile sim?

thanks for any help with this.