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Wednesday, May 13, 2009

Procedure for Unlocking:

For unlocking the locks the following steps are to be followed:

1. Installation of Dangle, Basic service software and flash files should be done first.

2. For Nokia phones unlocking Double click in Ikon "DCtx.," the Nokia Service Screen opens.

3. Connect Dangle to the system

4. Connect the phone to be serviced to the dangle by using suitable service cable.

5. Click "connect" button to establish connection from Dangle to the software. Select speed to "Normal" or "Slow" and then select phone model to be serviced.

6. For "Enter security code" problem Double Click "Reset user Lock" in UI Options (UI-user information)
OR
Alternatively select "Info" option and see the user lock (security code_ displayed. Enter the code phone will open.

7. For Network and SIM Lock Problems:
Double Click "Init... SIM Locks". After doing this the phone will function in all Networks and any Sim.

8. For Language Changed Phone:
Double-Click "UI Defaults" to change language and other settings to Default without erasing User Information.
OR
Double click "Full factory Default" to change language and other setting to Default, but user information stored in phone will be erased.

9. To confirm Hardware failure (Power Stage):
Click "Check"
Result Shows "First Boot OK" - If Hardware Ok.
Result Shows "First Boot Error" - IF Phone Hardware defective.

Different parts of EEPROM :

The software loaded into the EEMPROM is divided into different parts as

1. MCU
2. PPM
3. PMM
4. WUG

MCU: Master Control Unit Software
This software is the main operating system of the phone. All the functions and menus are controlled by this software. All the symptoms mentioned above are due to the defects arising in this area.

PPM: Post Programmable Memory
In Nokia phones language packs are stored in this area. By flashing this area we can update the phone with a designed set of phone languages.

PMM: Permanent Memory
This area of memory is stored with permanent information of the phone. This area called also be called as Product Profile Area.

WUG: Wake Up Graphics
This area of memory certain the power on Graphics details of the phone.

Repairing Mobile Phone (Software Defects):

The following are some of the few symptoms that appear when the software area of the pone becomes out of order fully or partially.

1. Display shows "CONTACT SERVICE" OR "CONTACT RETAILER"
2. Phone Hangs - Very Often
3. Phone restarts (will switch off and on) automatically
4. Phone keys response will become slow
5. Phone becomes Dead
6. Graphics of the phone will be ok - but no texts/numeric will appears - voice functions ok.
7. Text/Numeric Ok-but no graphics-voice functions Ok
8. Only Background lights when switched on - No other function - or Voice functions Ok.
9. Phone starts normally, but no functions
10. Phone resets when any selection is done
11. Phone shows error when any setting is stored
12. Phone shows error when tried to store photos

For all the above problems the defective software should be erased from the EEMPROM and fresh software should be loaded on to it. This process makes the phone work properly. This method of erasing and reloading the software is termed as "FLASHING".

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