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View Full Version : NFREE Troubleshootings guide



man0n
24-04-2002, 06:25 PM
From last quarter of year 2000 Nokia changed protection schema about how to
remove sp lock on nokia phones, thats why was necessary to use different methods
to unlock nokia phones, and Dejan invented a cheap way to flash Nokia phones
without expensive security box. Here we show a guide to fix commom problems
about flashing:

Possible problems after Flashing:

1. Symptoms: In the Screen always appear CONTACT SERVICE:

Description: Indication that the data of the MCU or PPM or Mostly EEPROM
is corrupted.

Solution: Apply method A and Method E


2. Symptoms: In the screen INSERT SIM and then resets and then CONTACT
SERVICE:

Description:Indication that the data of the MCU or PPM is corrupted

Solution: Apply Method A


3. Symptoms: Phone with with no network:

Description: Indication that the Faid still needs to be updated.

Solution: Apply method B. If Faid was succesful updated and still error
maintains, some checksums have incorrect values -> Apply Method C, Method
A and Method B


4. Symptoms: Phone no power on:

Description: Indication that the MCU data might be corrupted.

Solution: Apply Method A


5. Symptoms: .Strange pictures and ringtones after authorising faid:

Description: Indication that some eeprom registers needs to be updated
by reset eeprom command.

Solution: Apply Method D


6. Symptoms: Bad but still working network connection:

Description: Indication that some eeprom registers needs to be updated
by reset eeprom command

or a Factory Reset Command.

Solution: Apply Method D


7. Symptoms: MSID is 000000000001000100000 after flashing:

Description: Indication that your phone either was unlocked partially
or MCU or PPM is corrupted

Solution: Apply method E or method F


8. Symptoms: When getting into wap settings phone hangs(6210,3330) :

Description: Indication that it must be resetted to factory settings
after flashing

Solution: Type *#7370# with simcard in it, if doesnt work then apply
method E


9. Symptoms: Blank screen after flashing and after entring menu:

Description:Sometimes it is caused by corrupted EEPROM sometimes its
DISPLAY problem

Solution: First apply method E, if doesnt work then try to DELETE STARTUP
LOGO (2 hands),if it also doesnt work change DISPLAY




Solution Methods:

Method A: Try to reflash the phone with the original or corrected backup
by using flasher cable and proggies for flashing, like kNok,
flash
tool or Dejan flasher.

Method B: Try to Update Faid by Comport cable and proggies as Nokia
tool 1.7b by Rolis, bPreaks
Eeprom tool V3 or nk_calc from dejan.

Method C: Try to trace and recalculate the incorrect checksums in flashfile
by programs as
nFree1.2, flash analyser, ppm
manager091 and many others

(note: Mostly a full flash file with only MCU & PPM Data is required for
these proggies.)

Method D: Try to do a Full phone reset by using com port cable and proggies
as NokiaTool

Method E: Try to upload virgin eeprom or eeprom from a working phone,then
change IMEI with eeprom
tools 3.1,or Rolis 1.7b,or nk_calc,power off the phone and then back on,now
all 4 locks are OPEN and IMEI changed,now you UPDATE FAID using one of theese
3 tools,and your phone works now.....If your phone still dont get into network
use log calculator by TEK....

Method F: Try to close all 4 locks by Nokiatool or similar (if it gets
error like CANNOT CLOSE LOCK dont worry,locks are closed even it says error,read
phone again and you will see.....)

then flash your phone again with MCU+PPM file,now read your phone's MSID...if
it is ok,first unlock all 4 locks by that 3 tools mentioned above and then UPDATE
FAID......


Comments are very welcome, it should be a thing we all agree with.



Glossary:

Flash: Flash is a type of memory, Its name comes from how the memory
is designed. Asection of memory cells can be erased in a single action or in
a "flash.". At NFREE, flash files are the files used to change programs
or firmware inside the phones.

PPM: Post Programmable Memory, special package developed by Nokia for
flexible upgrading

MCU: Micro Controller Unit, the program part which contains instructions.

MSID: Mobile Subscriber Identifier.

FAID: Flash Authority IDentifier Number, 12 bytes, consist of 4 byte
from fchk.c
and 8 bytes from MSID calc.



Nokia flash mapping addresses:
http://www.nokiafree.org/forums/images/nokia-flash-mapping.gif

BizzyRok
16-06-2002, 11:42 PM
where are the methods that you have to apply

virus2
24-07-2002, 10:16 AM
I get the next message from Knok: "DCT3_DecodeMSID: invalid signature in decoded MSID (ABADAC/7A812A)

how can i corect the error?