Entrepreneurial techies discovered a specific code embedded in the flash file. If you flashed a specific combination file (a specialized type of flash file used for repairs), you could unlock the network bands, turning a restricted regional phone into a global device.
and select the file starting with "CSC" (to wipe data) or "HOME_CSC" (to keep data). Start Flash: samsung n920f flash file
Because the flash files were so widely shared and modified, the N920F stayed usable for years longer than Samsung intended. While other phones from 2015 ended up in landfills, N920F units are still used today as media players, dashcams, or dedicated Linux drivers (via postmarketOS), all because the community refused to let the software die. you could unlock the network bands