iphone 3gs 4.3 fw 6.15 bb - seems unlocked but sim won't work

bbboodlesmom

macrumors newbie
Original poster
May 5, 2011
4
0
I bought a jailbroke iphone 3gs 4.3/6.15 with new bootrom on it. I unlocked it using ultrasnow, no probs. However, when I went to put in my working tmobile sim card, no carrier comes up. It doesn't say Searching, it just doesn't say anything! I am not sure what to do since I know it is a tethered jailbreak. What i want to do if possible, is upgrade to 4.3.3 so it can be untethered jailbreak, rejailbreak it and re unlock it. Is that possible,and how do i do it, step by step. Thank you so much!!!
 

b0bab0i

macrumors regular
Jan 10, 2012
155
2
I bought a jailbroke iphone 3gs 4.3/6.15 with new bootrom on it. I unlocked it using ultrasnow, no probs. However, when I went to put in my working tmobile sim card, no carrier comes up. It doesn't say Searching, it just doesn't say anything! I am not sure what to do since I know it is a tethered jailbreak. What i want to do if possible, is upgrade to 4.3.3 so it can be untethered jailbreak, rejailbreak it and re unlock it. Is that possible,and how do i do it, step by step. Thank you so much!!!
Did you turn off 3G? T-mobile runs on different frequencies so 3G won't work.

Try turning off 3G, then turning airplane mode on and off.
 

mtime

macrumors newbie
Jan 6, 2012
24
0
Might try downgrading to IOS 4.1 since Apple is still signing or you could upgrade to IOS 5.0,1 untethered.
 

Crystal-RX

macrumors 68030
Dec 22, 2008
2,691
0
Seattle, WA USA
I got the same issue with one of the 3GS I worked on previously. with 4.3, 06.15 baseband, ultrasn0w installed. It did not get signal at all. only 1 bar with no carrier name. Downgrading it to 4.1, installed ultrasn0w and it worked fine. So, you might want to try it and see if it works for you.
 

bbboodlesmom

macrumors newbie
Original poster
May 5, 2011
4
0
Flash the iPad bb again using redsnow.
You can only update it using custom ipsw's.
How do I flash ipad bb?

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I got the same issue with one of the 3GS I worked on previously. with 4.3, 06.15 baseband, ultrasn0w installed. It did not get signal at all. only 1 bar with no carrier name. Downgrading it to 4.1, installed ultrasn0w and it worked fine. So, you might want to try it and see if it works for you.
Can you give me instructions on how to do that?
Thank you!
 

bbboodlesmom

macrumors newbie
Original poster
May 5, 2011
4
0
I got the same issue with one of the 3GS I worked on previously. with 4.3, 06.15 baseband, ultrasn0w installed. It did not get signal at all. only 1 bar with no carrier name. Downgrading it to 4.1, installed ultrasn0w and it worked fine. So, you might want to try it and see if it works for you.
Can you tell me how to downgrade to 4.1? Also, i have new bootrom, does that matter?
 
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