Celkon A21 firmware ------------------------------------------- Content Of File: A 21\driver\drivers.rar A 21\flash tool\SP_Flash_Tool_exe_v3.1336.0.198.rar A 21\imei tool\imei tool\imei tool\drivers.rar A 21\imei tool\imei tool\imei tool\modem database\APDB_MT6577_S01_MAIN2.1_W10.24 A 21\imei tool\imei tool\imei tool\modem database\BPLGUInfoCustomApp_MT6577_S00_MAUI_11AMD_W12_22_SP_V5 A 21\imei tool\imei tool\imei tool\SN_Write_tool_exe_v2.1228.0\DistFile.cab A 21\imei tool\imei tool\i