Oh wow. Phillip is back. His sole purpose on this forum is to make sure we are saying the Samsung messager correctly. Thanks Phillip. What would we do without you?
Now for the answer to your question....
I have had these and at the end of the full flash, I typed in 47*68#13580 then 073. This resets the phone to defaults for cricket.
After that, I went into Samsung PST and adjusted the settings accordingly for data, wap, and mms.
I hope that helps. If not, refresh your account. That is usually a pretty good solution too.