a850 发哥版变砖,刷机出问题

siwangguitar

驱动安装正常,刷机过程中进度1%的时候弹出:
---------------------------
Smart Phone Flash Tool
---------------------------
Common Hint: For SP Flash Tool issues:
Please supply your tool version, GUI screen shot, and tool logs when you encounter trouble with the latest tool.
How to obtain the tool logs?
1. Run the tool;
2. Press Ctrl+Alt+t(Tool Title Hint: Runtime Trace Mode);
3. [Menu]Help-[SubMenu]Open logs folder.
BROM ERROR : S_BROM_DOWNLOAD_DA_FAIL (2004)
[H/W] Fail to download DA to baseband chip's internal SRAM!
[HINT]:
1. There's an cable communication problem between FlashTool and BootROM.
2. Target might be shutdown unexpectedly or target lost power supply.
[ACTION]
1. Try again.
2. Proceed H/W checking in download cable and target side com port.
3. Monitor if power-drop occured in target side.
---------------------------
OK   
---------------------------

跪求大神帮帮忙,万分感谢