So, after doing a little searching, I found out that the code on one of the SIM holders is 808 RM-807 Product Code 059M7K7. That is why the holder seems to fat when inserted. It's very hard to insert and remove. It's not even for this phone. This also means I don't know the variant code needed for the firmware. Can I install these : DFL61_HARMATTAN_40.2012.13-7.LTA_EMMC_LTA

DFL61_HARMATTAN_40.2012.21-3_PR_LEGACY_001-OEM1-958_ARM

RM696_059J260_40.2012.21.3_001.vpl

on these phones?