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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Nokia > Nokia Hardware & Hardware Repair


Nokia Hardware & Hardware Repair all what you need for Hardware Repairing for Nokia Phones. Before writing any thread here try to check the Frequently Asked Questions Section.

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Old 04-18-2003, 13:34   #1 (permalink)
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willy please help dead 8250 unknown flash id


rollis gives error
====================
V 5.06.25-04-02.NSM-3D
unknow flash id
====================
flash id 206570bx

reballed flash
replaced flash

still same error phone is dead
but i made a jumper from p30 pin4 to pin6 and now phone is live

so replaced p30[n220]

but i can not repair imei
clear sp lock or update faid

eeprom tools show faulty rf, bad imei ,

and flasher still shows unknown flash id

i cant read or wright flash

need help thanks.
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Old 04-18-2003, 15:18   #2 (permalink)
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Hiya


Combo memory ( flash chip ) is broken or bad soldered...

Try to reflow it thru board. Do not apply hot air directly to chip or You will put it down once for good....



BR

Vule
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Old 04-20-2003, 07:32   #3 (permalink)
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i replaced two flash chips
thanks

but by heatng mad once it shown correct id

strange i think pcb is faulty
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Old 04-20-2003, 09:52   #4 (permalink)
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Re: willy please help dead 8250 unknown flash id

Quote:
Originally posted by mobilemafia
rollis gives error
====================
V 5.06.25-04-02.NSM-3D
unknow flash id
====================
flash id 206570bx

reballed flash
replaced flash

still same error phone is dead
but i made a jumper from p30 pin4 to pin6 and now phone is live

so replaced p30[n220]

but i can not repair imei
clear sp lock or update faid

eeprom tools show faulty rf, bad imei ,

and flasher still shows unknown flash id

i cant read or wright flash

need help thanks.
N220 is a "charge pump" for you to flash phone give VPP .
most 8250 is MCU rusty on connect pin , try to remove MCU, and clean those rusty, and put new MCU !

Willy
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Old 04-20-2003, 10:29   #5 (permalink)
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thanks willy

but locally mad is not available hear
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Old 04-20-2003, 10:40   #6 (permalink)
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Quote:
Originally posted by mobilemafia
thanks willy

but locally mad is not available hear
it sell on CHINA about 50 RMB ( more or less)
try to get any friend who stay in CHINA or HK
but careful with SARS !

willy
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Old 04-20-2003, 11:01   #7 (permalink)
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hi willy

50 rmb= ?$

and about SARS there are 12 suspected SARS passager from newzealand,singapor and Hk are resistered in india from last couple of days....

thanks.....
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