Hi!!
I have a Samsung grand prime SM-G530T from the T-Mobile company. I have been looking for how to change or unlock the frequency bands so that 4G is compatible in my country. I tried with firmwares for modems that does have compatible bands and no results. I also tried a firmware of a SM-G530F and a SM-G530H but I don't let them install.
What I can do??
Thanks for your time.
