Well, at last i have my 1.1.2 OTB full working!!!!!
SMS, YouTube, Stocks, Maps, Weather, WiFi, and ALL telephone features (with a Telcel GSM Chip)!
Thanks a lot guys, I think mine is the first 1.1.2 OTB full working iPhone in Mexico City full software unlcked and running 1.1.3.

What I did?, just followed instructions posted here: http://www.modmyi.com/forums/showthread.php?t=30433

At last all the reading, all the tests, all the waiting is worth it!

a lot of thanks to: poetic_folly, cash7c3 and all the ones involved on seting up this site.