[AT&T LG Optimus G] DerekM1989:
Please help me!!! I need you help... :(

Hello, I have walked around and around looking for solutions and I've been finding one after the other .... what I mean is that yesterday try to format my phone is a LG Optimus G E970 at & t and happened that when restart came me an error the secure boot : error ... something like that ! then started to search forums how to fix that problem! have knowledge of flash and that was the only option I had. The bad esque one tutorial I found after spending hours looking at that tutorial and I found I had to flasharlo with kdz Claro Brazil and was for e971 E975 model or can not remember the question is ... He was saying that there is worry because after that flash was due to connect and update with the LG Software update and there is cellular and should update the firmware back to the factory bone stock that was to E970 at & t . Up to this point everything worked great , accomplish revive my phone , here comes my problem and what I am afflicted esque after flashing the firmware of Brazil no longer conceded the LG update program , so look and look and found another tutorial where finally achieved it put the firmware stock at & t BUT now I 've realized that I have no signal sim bone network of the network, I think it's because to see damaged or deleted some files from the EFS the problem is that I could never do backup : cry :: cry :: cry :: cry : and do not know how to put it detects the sim card ? ? I'd like urgent expert help or if someone has passed this same problem and have resolved to share their solution and they agradesere loooong ! ! I hope they can understand my concern and help , thank you very much beforehand hands !

I can only speak spanish but I used the google traductor for traslate to English... If you know spanish you can write in spanish please!

Hola, he andado vueltas y vueltas buscando soluciones y he ido encontrando una detras de otra.... a lo que me refiero es que ayer intente formatear mi telefono es un LG Optimus G E970 at&t y ocurrio que cuando se reinicio me salio un error del secure boot: error... algo asi! luego comence a buscar en foros como solucionar ese problema! tengo conocimientos sobre flashear y esa era la unica opcion que tenia. Lo malo esque encontre un solo tutorial despues de pasar horas buscando y en ese tutorial encontre que tenia que flasharlo con un kdz de Claro Brazil y era para el modelo e971 o e975 no recuerdo bien... la cuestion es que El decia que no se preocuparan porque despues de ese flasheo se debia conectar y actualizar con el LG Software Update y ahi se deberia actualizar el celular y volver al firmware stock osea al de fabrica que era el de e970 at&t. Hasta este punto todo funciono excelente, logre revivir mi celular, aqui viene mi problema y por lo que estoy aflijido esque despues de flashear el firmware de Brazil ya no admitia la actualizacion el programa de LG, asi que busque y busque y encontre otro tutorial donde al fin logre ponerle el firmware stock de at&t PERO ahora me he dado cuenta que no tengo señal de la sim osea network de la red, creo que es porque se a de ver dañado o borrado algun archivo de la EFS el problema es que nunca pude hacer backup :cry::cry::cry::cry: y no se como hacer para poder ponerle que detecte la sim card??? Quisiera ayuda urgente de expertos o si alguien le a pasado este mismo problema y lo han solucionado que compartan su solucion y les agradesere muuuucho!!!!!! Espero entiendan mi preocupacion y puedan ayudarme, de ante manos muchas gracias! :crying::crying: