This is a step-by-step tutorial on how to use the Research Download Tool to flash a Spreadtrum (SPD) or Unisoc Android device's .pac file, firmware or stock ROM. It's about the same procedure for the Upgrade Download Tool and Factory Download Tool....
Spreadtrum Upgrade Tool. Note that flashing a firmware to your phone erases everything in your phone including contents on internal storage. It is always very advisable to backup your contents to an external storage or a PC. If your phone is bricked and can’t be accessed, I guess there is...
2,FDL2:初始化NAND控制器,与PC通信下载其他Image到NANDflash。[客户可自行编译,一般情况下无需改变]3,u-boot-spl-16k.bin:第一级bootloader,在IRAM执行,初始化CPU,SDRAM等,引导UBOOT分区到SDRAM中。[客户可自行编译,一般情况下无需改变]4,u-boot.bin:真正的bootloader,初始化部分设备,负责将虚拟机,ThreadX分区...