flashtool刷機問題麻煩大大解救?

弄很久了,我刷機方法跟以前一樣,只是Xperia M按音量減再插上電腦,我看到綠燈亮我也放開了,還是會出現紅字,不過我好奇綠燈亮一下很快就消失了,這是跟我沒裝flashtool dirver有關?有數位簽章我不會用,而且以前好像不用dirvers?

06/044/2014 07:44:06 - INFO  - Flashtool Version 0.9.16.1 built on 06-16-2014 23:00:00
06/044/2014 07:44:07 - INFO  - Executing search strategies to find proxy selector
06/044/2014 07:44:07 - INFO  - No proxy found for IE. Trying next one
06/044/2014 07:44:07 - ERROR - Error parsing settingsprefs.js (系統找不到指定的檔案。)
06/044/2014 07:44:07 - INFO  - Strategy firefox failed trying next one : java.io.FileNotFoundException: prefs.js (系統找不到指定的檔案。)
06/044/2014 07:44:07 - INFO  - No proxy found for java. Trying next one
06/044/2014 07:44:07 - INFO  - Syncing devices from github
06/044/2014 07:44:07 - INFO  - Pulling changes
06/044/2014 07:44:10 - INFO  - Devices sync finished.
06/044/2014 07:44:15 - INFO  - Device disconnected