5892自动升级后提示加密失败，双清重启无用，YGDP无法刷机，提示错误如下，如何解决？高手赐教
15:10:41 CELL0: F:\4.3.078.P2.140805.5892\4.3.078.P2.140805.5892\4.3.078.P2.140805.5892.CPB
15:10:41 CELL0: Start to download tz.mbn file ...
15:10:41 CELL0: transmit tz.mbn file size info OK
15:10:41 CELL0: Fail to transmit tz.mbn file Flag code
15:10:41 CELL0: Res:flash write failure
15:10:41 CELL0: Download faile,please try again!!
15:10:41 CELL0: Total download time elapsed: 0 min : 0 sec
15:10:41 CELL0: Downloading all files: Failed!
15:10:41 CELL0: F:\4.3.078.P2.140805.5892\4.3.078.P2.140805.5892\4.3.078.P2.140805.5892.CPB
15:10:41 CELL0: Start to download tz.mbn file ...
15:10:41 CELL0: transmit tz.mbn file size info OK
15:10:41 CELL0: Fail to transmit tz.mbn file Flag code
15:10:41 CELL0: Res:flash write failure
15:10:41 CELL0: Download faile,please try again!!
15:10:41 CELL0: Total download time elapsed: 0 min : 0 sec
15:10:41 CELL0: Downloading all files: Failed!
