I had such a blinks while i did for the first time upgrading to custom ROM but it blinked for just 3 times twice thats all. If you follow my steps to upgrade the ROM i hope it wont blink and wont have any problem for any one. Because i spend lots of time and collected all the information needed to upgrade my streak. I did researched for whole one day to find the dell streak ADB driver and collected all the steps that is easy to help other fellow mates to have a recent upgrade to their Dell Streak.
And I formatted my dell streak with same steps for like more than 6 times already and never had any problem. And couple of time i did with the streakmod and didnt had problem as well. I think this is the easy and detailed information to upgrade to gingerbread 2.3.3 without any problem. I saw lots of problems and lack of information in others post. So, i decided to post a detail and easier steps so mates with dell streak can enjoy the gingerbread 2.3.3
All the best guys with upgrading