[Galaxy S 4 Q&A, Help & Troubleshooting] Cannon_Foddr:
Thanks for replying & yes I know that many things I've said do sort of confirm what I think may be the right ROMs etc..

But I would like to be ABSOLUTELY sure I use the right one. Many posts say you can seriously brick your phone using the wrong files

> I guess the modem files are somewhere in the forums on Sammobile then ??.. I never look that hard there

> In download mode - the text in the corner is so small I can barely read it.. guess I have to get a magnifying glass to see that ;)

> Had a derpy moment about the download via PC & transfer over.. & as said I would still need a paid version of Titanium to freeze apps.

Yes I could google & download from suspicious sites (there's no way to get it from Play store for example) but that's one thing I REALLY hate doing - you never know whats been added :(

The bit I mentioned about 'modem' - Can you get 'stock' roms with different modem files ?

.. I know you can get customized roms of stock . but worried that using the wrong file can seriously brick your phone

All I wanted to know is how do I find out what Modem is installed atm on my phone to check its the same as in the ROM download

About the downgrading/unrooting - Yes I know it won't get rid of Knox, but at least I could switch on my WiFi with (one of) the previous 4.2.2 version (whatever one I had before). Even reverting to a working unrooted older ROM would be better than no WiFi at all (especially if I have to send the phone back to Samsung service for example)

As for the Sammobile details & my phone details, I was a little concerned with the differences shown between them

For example: I updated my Firmware yesterday (25th) & my phone shows Baseband version : I9505XXUDMH8

There's no 'UDMH8' shown in the latest rom on Sam's: only PDA (UEMK8) ,CSC (UEMK5) or Modem (UEMK8)

Although there IS a 'UEMK8' under my phones Build Number: JSS15J.I9505XXUEMK8

(& I always thought 'E' came after 'D' so if the latest sam rom came out on 22nd & I updated later than that .. why didn't I get the 'E' instead of the 'D' ?)

Also there is no 'UEMK5' shown under My Phone details (that I can find). Since there's no '5' in my phone details I was (once again) worried that using the wrong file would brick the phone

- Can I assume then that 'PDA' shown by Keis is the same as the last part of 'Build' ?? & as long as they are the same then the ROM's the same & is safe to use ??

- What do the CSC (UEMK5) and MODEM (UEMK8) numbers refer to then ?? & should I be worried if they are different than what (may be) on my phone

Oh - one last thing IS my GT-I9505 phone the same as a GT-I9501 LTE ??? - I thought there was a difference between a 'normal' and a 'LTE' phone (just not sure what)

Thanks again for taking the time in answering my (stupid) questions.For a newbie, this type of thing can be a bit nerve wracking.. I would hate to see a expensive phone being totally bricked

EDIT : just found out about *#1234#.. STILL not sure what these refer to (compared to Keis) but at least I now see a CSC, & there's a 'UEMK5' and 'UEMK8' there - what the hell is CP - boy is THIS confusing :confused:

AP: I9505XXUEMK8

CP: I9505XXUDMH8

CSC: I9505BTUEMK5