Ultimate checksum generate solution for Android flashing, upgrade and download.
If you ever faced checksum error problem while flashing Android phone through SP flash tool, SP MDT multi port download tool or any other firmware upgrade tool, then it should solve checksum error problem. Just Download checksum generate tool from here and copy unzipped files to firmware folder to generate new checksum file. After copy to firmware folder, you need to open Checksum_Generate.exe from firmware folder and wait... everything will be done automatically. You may see a new checksum file in firmware folder and you don't need to do anything except open checksum_generate.exe from firmware. See download link at end of this post.