If they are made for a different baseband (but for I9195) is it possible to backup the MODEM firmware, flash another ROM and then flash the MODEM over again to retain the baseband? If this is possible where do I find the MODEM firmware to back it up? I've had a search but I think I am missing the really low level understanding of how the MODEM itself fits into the ROM picture.
Any help appreciated, even if its just a search term suggestion or link.
edit: I should put my baseband is I9195TDVUAMH1, using 1800mhz LTE.