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10 posts

Wannabe Geek

Topic # 794 10-Dec-2003 02:28
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I was trying to use GPRS via a Nokia 6310i from an iPAQ 4150 over BT. I had it all working from the 4150, but the desktop BT could not see the phone (ver. 5.22). Nokia suggested to get the phone firmware upgraded to 5.51, which I did, and now the desktop is working over BT+GPRS, but the 4150 is unable to connect!

The phone is fine using WAP and also GPRS from the desktop, but now gives an error "subscribe to GPRS first" when attempting a connection from the iPAQ. I have seen a number of other people reporting this behaviour.

To cut a long story short, here is the solution:

The 4150 (and probably all WM2003 PPCs) uses an init string of ATE0V1&C1&D2 which used to work under Nokia firmware 5.22 but stops working at 5.50 on.

The laptop BT modem driver (IVT BlueSoleil) uses a slightly different string: AT&FE0V1&D2S0=0S7=10 which clearly works on my laptop.

On the PDA, this is located in the registry at HKLM\Drivers\Unimodem\Init\2 and can easily be changed by a registry editor. After this change, GPRS is working flawlessly!

Now if only someone had a proper VPN client...


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2 posts

Wannabe Geek

  Reply # 4369 22-Mar-2004 10:23
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Hi Tomn,

I have an iPAQ 4155 and 6310i with v.5.50. I tried your solition but still not works. Should i upgrade to 5.51 from 5.50? is this reason? Please help.


10 posts

Wannabe Geek

  Reply # 4370 22-Mar-2004 11:20
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No you should not need the upgrade, although it would not hurt. It is probably some other setting, check out for more help on settings, or even the BT Guides on this forum.


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Wannabe Geek

  Reply # 4375 22-Mar-2004 20:46
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Hi Tomn,

Should i soft or hard reset 4155 after changed string in registry? Still not works :((


10 posts

Wannabe Geek

  Reply # 7178 14-Jul-2004 00:15
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A small update: when I installed the 4150 ROM update SP27939 recently, GPRS stopped working. Bluetooth worked flawlessly, so I played around with the initialisation strings. The only one that worked in the end was setting HKLM\Drivers\Unimodem\Init\2 to "AT&F<cr>" instead of the previous suggestion (the string needs to be exactly as shown).

I suspect some kind of Unimodem timing issue, but I am not complaining. GPRS is working fine now, and I have used it repeatedly with my 6310i.

Hope this helps!

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