Otp or not Otp ??????? - GSM-Forum

Rheda31 · 01-16-2004, 17:19

Is it possible to write on nokia uem????
big mistake

Medz · 01-16-2004, 23:40

It is an OTP (one time programing) , U can write over a blank one
to rebuild a new IMEI , then it is only for reading access.

hakima · 01-17-2004, 13:04

I'm waiting for the answer of Mr Dejan Kaljevic(The King of Nokia)for this question!!!!!!!!!

HONGXING · 01-18-2004, 20:56

I think it is "like OTP". That means it has some instructions that permit writing, but noone knows them, so we have to change UEM.

Medz · 01-18-2004, 23:28

Old eprom's was eraesd by ultra-vilot and needs a higher voltage
to reprogramed.
After Cmos technology , static memorys , and the integration of
huge No's of circuits into 1.8 and 1.3 microns , Chips like UEM's
appears , and it becomes very easy to design a chip only for one
manifacturer *******r , and keeps the seicret of " know how " in
between them.
It could be a protected memory zone , protected writng enabeling
control heiden , returning to the classiccal method of programing
like ROM memorys.
Actually it is still a great seicret and we are the only complaining.

01-16-2004, 17:19	#1 (permalink)
Rheda31 Freak Poster Join Date: Dec 2002 Location: Swiss Age: 48 Posts: 148 Member: 19006 Status: Offline Thanks Meter: 0	Otp or not Otp ??????? Is it possible to write on nokia uem???? big mistake

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01-16-2004, 23:40	#2 (permalink)
Medz No Life Poster Join Date: Sep 2003 Age: 66 Posts: 807 Member: 39601 Status: Offline Thanks Meter: 13	It is an OTP (one time programing) , U can write over a blank one to rebuild a new IMEI , then it is only for reading access.

01-17-2004, 13:04	#3 (permalink)
hakima No Life Poster Join Date: Jul 2003 Posts: 2,895 Member: 33804 Status: Offline Thanks Meter: 22	I'm waiting for the answer of Mr Dejan Kaljevic(The King of Nokia)for this question!!!!!!!!!

01-18-2004, 20:56	#4 (permalink)
HONGXING No Life Poster Join Date: Jul 2003 Location: Inside 8250 UART and 8086 CPU ;-) Posts: 1,024 Member: 33079 Status: Offline Thanks Meter: 2	I think it is "like OTP". That means it has some instructions that permit writing, but noone knows them, so we have to change UEM.

01-18-2004, 23:28	#5 (permalink)
Medz No Life Poster Join Date: Sep 2003 Age: 66 Posts: 807 Member: 39601 Status: Offline Thanks Meter: 13	Old eprom's was eraesd by ultra-vilot and needs a higher voltage to reprogramed. After Cmos technology , static memorys , and the integration of huge No's of circuits into 1.8 and 1.3 microns , Chips like UEM's appears , and it becomes very easy to design a chip only for one manifacturer *******r , and keeps the seicret of " know how " in between them. It could be a protected memory zone , protected writng enabeling control heiden , returning to the classiccal method of programing like ROM memorys. Actually it is still a great seicret and we are the only complaining.