Emulated EEPROM and Hardware EEPROM - GSM-Forum

pks · 04-19-2001, 16:44

i dont really get the concept behind emulated eeproms. in a hardware eeprom (6110, 5110, etc), details such as imei, locks, sec code are stored within the eeprom. but what about for 6210, 3310 and others? i heard the eeprom are emulated. so does this mean the fone does not physically have the eeprom? and so if settings are made, are they within the mcu sw?

XzZ · 04-21-2001, 05:34

how ?

Brobble · 04-21-2001, 10:07

PKS, you are right! In 6210, 3310, 8210, 8850, 8890 ... is no eeprom, it is emulated in Flashrom, behind the PPM-Package! For example 6210 has 4 MB Flashrom, the ppm-package ends at 005A, and from 005A begins the emulated eeprom area! And this is great, so we can try to manipulate the eeprom, without desolder it! :-)

That´s it!

Greetings MR...

<FONT COLOR="#ffff00" SIZE="1">[ 21 April 2001 11:08: Message edited by: Brobble ]</font>

04-19-2001, 16:44	#1 (permalink)
pks Freak Poster Join Date: Mar 2001 Location: Australia Posts: 452 Member: 3815 Status: Offline Thanks Meter: 2	Emulated EEPROM and Hardware EEPROM i dont really get the concept behind emulated eeproms. in a hardware eeprom (6110, 5110, etc), details such as imei, locks, sec code are stored within the eeprom. but what about for 6210, 3310 and others? i heard the eeprom are emulated. so does this mean the fone does not physically have the eeprom? and so if settings are made, are they within the mcu sw?

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04-21-2001, 05:34	#2 (permalink)
XzZ No Life Poster Join Date: Apr 2001 Location: Winimei Age: 8 Posts: 633 Member: 3938 Status: Offline Sonork: 100.1637318 Thanks Meter: 90	how ?

04-21-2001, 10:07	#3 (permalink)
Brobble No Life Poster Join Date: Oct 2000 Posts: 547 Member: 2274 Status: Offline Thanks Meter: 0	PKS, you are right! In 6210, 3310, 8210, 8850, 8890 ... is no eeprom, it is emulated in Flashrom, behind the PPM-Package! For example 6210 has 4 MB Flashrom, the ppm-package ends at 005A, and from 005A begins the emulated eeprom area! And this is great, so we can try to manipulate the eeprom, without desolder it! :-) That´s it! Greetings MR... <FONT COLOR="#ffff00" SIZE="1">[ 21 April 2001 11:08: Message edited by: Brobble ]</font>