I wanna know is there have a solution to solve my problem? i accidently upgraded my iphone 3G to latest firmware 4.0.2 and downgraded it back to 3.1.3 . And now my phone only show emegency call only..when i open with itunes,it said my sims is not detected..i just solve this problem and my phone can log to Home but no signal..so anyone can help me?

P/S : Sorry if my post is not in right category..i think this iPhone forum is the right forum.

Hello..i have a problem with my iphone 3G model..i accidently update my firmware to 4.0.2..and downgrade it back to 3.1.3..i can jailbreak my iphone..install cydia..but, my sim not detected..it show 'NO SERVICES'..what can i do? my set is US..

here my detail :

-Version : 3.1.3 (7E18)
Modem Firmware : 05.14.02

Before,my firmware is 3.1.2 and i update my Cydia..please help me..

This post has been edited by shedvtec: Sep 23 2010, 08:17 PM

Hello LYN Forumers..i have 1 problem..this last 2 weeks my iPhone 3G got WIFI problem..sometime i can join my Home Wifi and sometime cant..last 3 days,my iPhone 3G cannot connect anymore with my Wifi..trying with other device like Nokia Phone n laptop..all success to connect but my iP3G cant..someone please help me..

*My iP3G can detect any Wifi but when i put the WEP key it always say "incorrect password"..i carefully insert the password n double check the password,but it always said incorrect password..why?

I done with that..but still same..this morning i trying connected with my office wifi..i put the right password but my iP3G cannot connect..what the problem...always says "Password Incorrect"..

had the same problem with my iPhone 3Gs. tried a reset network setting, complete restore and updating firmware but nothing seems to work. it's probably a problem with the wifi router's setting being incompatible with your iPhone.

[/quote]


i dont think my wifi router incompatible with my phone bcoz last 2 weeks all smooth..no problem,everytime i on my phone it always auto connect with any knows wifi..

so what we gonna do katnl...do you have some friends who know how to fix it or send it to services shop...

I jailbreak my iphone to IOS 4.1..my phone now running sim lock since 1 month ago..this is bcoz my friend upgraded before ask me..(mine US set)..so i only can connect to wifi for internet..3G coverage is good here (Alor Setar)..glad to hear this is not the hardware issues..so i wanna find someone here to fix this prob..

mine is black one..dont remember is aztech or what..im trying to remove the WEP key..but still cant connect..i restart more than 10 times but still same..this morning i try connect with office wifi (d-link i think bcoz silver colour)..still says "Incorrect Password"...

OK i give u details..(im not a english user so i hope u/all can understand it)..last 2 weeks ago this problem haunting me..suddently disconnect and i cant reconnect back..(Home Wifi) i do this step >
- Reset Network Setting (still cant connect)
- Forget This Network (still cant connect)
- Restart iPhone+PC+Router (Still Cant Connect)
- Trying re-enter wep key more than 10 times (still not connected)
- Try connect with other wifi (Office ) still cant connect n always said "Incorrect Password"..
- I also trying diasble WEP key at home wifi, this error show - "unable to connect"..

so i have no idea about this problem..someone please help me..

Yes..im in IOS 4.1..before i jb my phone this problem already haunted me..after i jb my IOS 4.1 also this prob haunted me..when im running on 3.x.x this prob never happen..if possible this is a IOS prob??

More detail - Last 3 days,after hard working re-enter wep key,the job is pay off when my phone finally connect..but last night when im download apps for my phone,suddently disconnect..and try harder to re-enter and fail..

Phone Spec :

IOS - 4.1
Baseband - 05-14.02
Phone set - US set (lock set)

This post has been edited by shedvtec: Oct 11 2010, 11:56 AM

Thanks for helping..my office is secured network..now im gonna go to Kopitiam for network test..i will be back asap for information..

*mine is US Set..can get replacement?

More detail - Last 3 days,after hard working re-enter wep key,the job is pay off when my phone finally connect..but last night when im download apps for my phone,suddently disconnect..and try harder to re-enter and fail..

Phone Spec :

IOS - 4.1
Baseband - 05-14.02
Phone set - US set (lock set)

This post has been edited by shedvtec: Oct 11 2010, 12:02 PM

Ok im back with bad news..trying hard to connect with Nasmir Unsecured Network..this error show > "Unable to Join Network"...so what im gonna do..i planning not to sell this phone bcoz im not a rich guy..

Im worry to restore bcoz mine set is US SET..donno how to unlock the phone after restore..

Ok but i mean quit from iTunes logo and emergency call..i donno how to out from there and activate my iPhone..