[Mi 3 Q&A, Help & Troubleshooting] SH1M4BD3:
Thats what i did in the 2nd try, but without tearing it down , here's the log of MiFlashtool

[00001B9C]CreateManagedObject(1261): Unspecified error(0x80131604)

[00001B9C]GetFactoryObject(1305): Unspecified error(0x80131604)

[00001B9C]CreateManagedObject(1261): Unspecified error(0x80131604)

[00001B9C]GetFactoryObject(1305): Unspecified error(0x80131604)

[00001B9C]GetFactoryObject(1326): The specified service does not exist.(0x800704db)

[00001B9C]GetSearchPath(1381): The specified service does not exist.(0x800704db)

[00001EA0]CEmergencyFlasher::IsQPSTServer(634): Not implemented(0x80004001)

[00001EA0]COM31.11Open serial port "\\.\COM3"

[00001EA0]COM31.11Load programmer "C:\adb\images\MPRG8974.mbn"

[00001EA0]DownloadFlashProgrammerDMSS(483): An attempt was made to load a program with an incorrect format.(0x8007000b)

[00001EA0]DownloadFlashProgrammerAndMiniKernel(936): An attempt was made to load a program with an incorrect format.(0x8007000b)

[00001EA0]COM31.11Open programmer "C:\adb\images\MPRG8974.mbn"

[00001EA0]COM31.11Receiving hello packet

[00001EA0]COM31.11Send hello response

[00001EA0]COM31.11ReadDataPacket id 13, offset 00000000, length 80

[00001EA0]COM31.12ReadDataPacket id 13, offset 0x000050, length 4096

[00001EA0]COM31.12ReadDataPacket id 13, offset 0x001050, length 4096

[00001EA0]COM31.12ReadDataPacket id 13, offset 0x002050, length 4096

[00001EA0]COM31.12ReadDataPacket id 13, offset 0x003050, length 4096

[00001EA0]COM31.12ReadDataPacket id 13, offset 0x004050, length 4096

[00001EA0]COM31.12ReadDataPacket id 13, offset 0x005050, length 4096

[00001EA0]COM31.12ReadDataPacket id 13, offset 0x006050, length 4096

[00001EA0]COM31.12ReadDataPacket id 13, offset 0x007050, length 4096

[00001EA0]COM31.12ReadDataPacket id 13, offset 0x008050, length 4096

[00001EA0]COM31.12ReadDataPacket id 13, offset 0x009050, length 4096

[00001EA0]COM31.14ReadDataPacket id 13, offset 0x00a050, length 1504

[00001EA0]COM31.14EndTransferPacket id 13, status 0

[00001EA0]COM31.14Send done packet

[00001EA0]COM31.14Open boot file "C:\adb\images\8974_msimage.mbn"

[00001EA0]COM31.14Send hello command 0

[00001EA0]RobustRead(55): Reached the end of the file.(0x80070026)

[00001EA0]RobustRead(55): Reached the end of the file.(0x80070026)

[00001EA0]RobustRead(55): Reached the end of the file.(0x80070026)

[00001EA0]RobustRead(55): Reached the end of the file.(0x80070026)

[00001EA0]RobustRead(55): Reached the end of the file.(0x80070026)

[00001EA0]RobustRead(55): Reached the end of the file.(0x80070026)

[00001EA0]RobustRead(55): Reached the end of the file.(0x80070026)

[00001EA0]RobustRead(55): Reached the end of the file.(0x80070026)

[00001EA0]RobustRead(55): Reached the end of the file.(0x80070026)

[00001EA0]RobustRead(55): Reached the end of the file.(0x80070026)

[00001EA0]ReceivePacket(301): Reached the end of the file.(0x80070026)

[00001EA0]DownloadMiniKernel(734): Reached the end of the file.(0x80070026)

[00001EA0]COM33.32Send hello command 1

[00001EA0]COM33.35Enable trusted security mode

[00001EA0]COM33.35Open EMMC card USER partition

[00001EA0]log: Open multi failed, unknown error

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[00001EA0]err: Open multi failed, unknown error��(7340111)

[00001EA0]DownloadMiniKernel(787): Catastrophic failure(0x8000ffff)

[00001EA0]DownloadFlashProgrammerAndMiniKernel(945): Catastrophic failure(0x8000ffff)

[00001EA0]CSoftwareDownload::DownloadBySettings(2161): Catastrophic failure(0x8000ffff)

[00001EA0]CEmergencyFlasher::DoWork(611): Catastrophic failure(0x8000ffff)

[00001EA0]GetFactoryObject(1326): The specified service does not exist.(0x800704db)

[00001EA0]SaveFlashResult(1347): The specified service does not exist.(0x800704db)