Olá tentei salvar meu galaxy SM-G3812B ja baixei muitos arquivos para tentar solucionar, mas sempre da esse erro, queria que vc me ajudasse. Obrigado

Added!!
Enter CS for MD5..
Check MD5.. Do not unplug the cable..
Please wait..
G3812BVJUANC2_G3812BZTMANC1_G3812BVJUANC2_HOME.tar.md5 is valid.
Checking MD5 finished Sucessfully..
Leave CS..
Odin v.3 engine (ID:6)..
File analysis..
SetupConnection..
Initialzation..
Get PIT for mapping..
Firmware update start..
SingleDownload.
boot.img
NAND Write Start!!
FAIL!

Complete(Write) operation failed.
All threads completed. (succeed 0 / failed 1)