wanarace
10-09-2002, 10:05 AM
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The "Contact Service" message is caused by the EEPROM
Component and itīs security check.
After changing any EEPROM, It must be "formatted" before
ANY new data is programmed. This is done when Full Factory
Default values are run. Without running this reset,
the IMEI/SIMLOCK programming will fail. This also applies
to models where the EEPROM is emulated in FLASH
- If the EEPROM is not correctly formatted and the
programming data is loaded to the phone, the security checks
still fail and in this case the EEPROM must be changed
to another new one in order to make another rebuild.
In this sense, even an EEPROM is a one time programmable
component.
- After a successful rebuild the "Contact Service" message
is still shown on the phone display because the Flash
authority checks fail.
- This will be fixed after the phone sw is updated and
after reflashing MCU SW things work fine.
If the programming data from SSSW has been wrong, the
phone does not get service or the SIM card is not
accepted, but no more "Contact Service" messages
on the display at this point. If data is OK, the
phone accepts SIM card and goes into service (at
least after tuning it).
- Because of full factory reset ALL TUNING AND CALIBRATION
must still be performed, because all RF and EM calibration
values are at factory defaults.
The "Contact Service" message is caused by the EEPROM
Component and itīs security check.
After changing any EEPROM, It must be "formatted" before
ANY new data is programmed. This is done when Full Factory
Default values are run. Without running this reset,
the IMEI/SIMLOCK programming will fail. This also applies
to models where the EEPROM is emulated in FLASH
- If the EEPROM is not correctly formatted and the
programming data is loaded to the phone, the security checks
still fail and in this case the EEPROM must be changed
to another new one in order to make another rebuild.
In this sense, even an EEPROM is a one time programmable
component.
- After a successful rebuild the "Contact Service" message
is still shown on the phone display because the Flash
authority checks fail.
- This will be fixed after the phone sw is updated and
after reflashing MCU SW things work fine.
If the programming data from SSSW has been wrong, the
phone does not get service or the SIM card is not
accepted, but no more "Contact Service" messages
on the display at this point. If data is OK, the
phone accepts SIM card and goes into service (at
least after tuning it).
- Because of full factory reset ALL TUNING AND CALIBRATION
must still be performed, because all RF and EM calibration
values are at factory defaults.