upgrade 2008 r2 express sp2 to 2008 r2 standard

hi there,

We have hit the size limit on sql 2008 r2 express and need to change the edition to standard.

Problem I have is that we are currently running 2008 r2 express SP2 whereas I can only find an ISO for 2008 r2 standard (no SP).

Is it ok to use edition upgrade option from this media?

Thanks for any advice

Alg