G1 not connecting to Google at startup after rooting failure

Hi, first of all thank you for taking the time for looking at this post.

Ok, so I attempted to root my g1. I downgraded to some 29 or something like that. (Alt L and Alt S some cupcake update from theunlockr). After it was done updating, I got a rainbow screen with Serial0. I ignored it and turned it off by removing the battery. Then I did some other update where I turned the phone on to recovery mode. After that, I turned it on, and I tried connecting to Google so I could continue on to the steps, but after many hours of trying, it would keep saying there was no network connection, (although, I do have a network plan, and before I tried rooting it, I could always connect no problem.) Also, at the top left, I could see 3g and Edge network symbols alternating, but it still wouldn't work.

I need help ASAP please. It would be greatly appreciated.

Thank you very much, and sorry for wasting your time with this question.

P.S. I did format to Fat32

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