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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Nokia > Nokia Base Band 5 ( BB-5 )

Nokia Base Band 5 ( BB-5 ) Baseband-5 Phones: 2700 Classic , 2730 Classic , 3109c , 3110c , 3120c , 3250 , 3500c , 3600s , 3610 Fold , 3710 Fold , 3720 Classic , 5130 XpressM , 5200 / 5200b , 5220 XpressM , 5230 XpressM , 5300 / 5300b , 5310 / 5310b , 5320 , 5500 , 5530 XpressM , 5610 , 5630 XpressM , 5700 , 5730 XpressM , 5800 , 6085 / 6086 , 6110n , 6120c , 6121c , 6124c , 6125 , 6126 / 6133b , 6131 / 6133 , 6131 (NFC) , 6136 , 6151 , 6208 Classic , 6210n , 6212c , 6220c , 6233 , 6234 , 6260 Slide , 6263 , 6267 , 6270 , 6280 / 6288 , 6282 , 6290 , 6300 , 6300i , 6301 , 6303 Classic , 6500 Classic , 6500 Slide , 6555 , 6600 Fold , 6600 Slide , 6630 , 6650 Fold , 6680 , 6681 , 6682 , 6700 Classic , 6710 Navigator , 6720 Classic , 6730 Classic , 6760 Slide , 6790 Surge , 7210c , 7310c , 7370 , 7373 , 7390 , 7500 , 7510c , 7610c , 7900 , 8600 , 8800 arte , E50 , E51 , E52 , E55 , E60 , E61 , E61i , E62 , E63 , E65 , E66 , E70 , E71 , E72 , E75 , E90 , N70 , N71 , N72 , N73 , N75 , N76 , N77 , N78 , N79 , N80 , N81 , N82 , N85 , N86 , N90 , N91 , N92 , N93 , N93i , N95 , N95 8GB , N96 , N97 , N97 Mini , X3 , X6

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Old 05-16-2007, 20:36   #1 (permalink)
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Technical discussion BB5 unlocking


Hi

i am curious as to how the unlocker works.

As i understand it, it reads out some data such as imei and possibly field 308, makes some calculations and writes a new value to field 308 or maybe even possibly just enters the correct unlock code thru the F-bus.

But in reality, is this needed ? I would think that what he really have found is the algorithm that is used in BB5 phones and since it was probably changed in newer phones he can make a logger that can calculate the correct codes for old phones but not for new ones.

All this is offcourse speculations but as a tech geek i would like to understand what is really taking place.

Twisterfan
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