over here all you need to do after you load the Cricket PRL is dail *2 and it OTA's for cricket been doing it for a while now and no problems what so ever. new or old Samsung's or any other Sprint phone for that matter, as far as setting 6 3's to the phone, to each his own, i rather just set everything to all 0's cause it's easy and OTA'ing is a lot easyer i think to be honest, as far as other Markts having *2 not work, like all you guy's have said, *22804 in most cases will work, however i think it be just easy to set everything to all 0's and i have yet to see or have a Sprint go back to the Sprint PRL when one hits *2. oh well just my 2 cents worth.
PS: Samsung A900 is a very commen phone i get and after PRL flashing *2 work's all the time, i had someone send a A900 back to NY Market, and *2 worked for them, etc.