change lui of W7 Pro and Repair installation Q

I have here a pc installed with windows 7 professional x86 RTM with user interface in pt-br. (1) How one made the change of language user interface to pt-br? Maybe using Vistalizator?
(2) Is there already a iso or exe of Windows 7 Professional x86 brazilian portuguese version without sp1 ( build 7600 / RTM ).
Is it possible to repair installation of this pc, which is unable update to SP1 (build 7601): (unknow) error 800F084F or 0x800f084f, (3) I mean using a "universal install disc" (ei.cfg removed)?
(3b) Or using a windows 7 professional SP1 x86 ?

 

(1)no, it's a retailer pc
(1b)why would I use the dump slic bin, cert and keys for?
(1c)upload the build? it's giving error.
(2)it says upgrade Enterprise to Ultimate, not Professional to Enterprise/Ultimate.
(2b)If 2 is wrong can I use a Ultimate disc to repair a Professional installation after converting through regedit?
shall I refrase, the computer were already used Vistalizator or maybe it's is native pt-br. I thought it didn't exist a image of windows 7 Professional pt-br originally. I thought it was like Ultimate, you have the english image then you download the LP.
(3)again, is it possible to repair installation of W7 Professional x86 pt-br build 7600 using a disc of W7 Professional x86 en-us build 7601 SP1?
(3b)Using a W7 Pro x86 sp1-u disc?
(3c)Using a universal 'ei.cfg removed' disc?
(3d)Using a W7 x86 All Versions English (the one with exe and setup.box)

 

2b. I think it might be no, it can't, because you said "requires same language installation media". Ultimate disc is en-us, Professional installation is pt-br.

A. using your updown8 tool, the media should be a ultimate 'ei.cfg removed' disc?
B. After upgrading, would fix the system? Because I can't update to SP1 build 7601 at the moment. It gives error.

 

A. you said "You need to remove the ei.cfg" what the requirements or conditions?
-> a home premium disc with ei.cfg removed can install ultimate OS ?