Nokia 5300: Part 2 The Security Code

A Writeup by The Giornale give a tutorial on how to reset the security code ( re-invent the wheel?). The only problem being if the security code is active, the phone will not sync to a computer to use this method. This is where the hacking comes into place.

This guide will follow the "Giornale" writeup, but interject on how to enable the phone.

Start by Downloading Nokia PC Suite 6.84.10.3. Megauploads has a version that works. The password for the rar file is www.fullandfree.info

When installing NSS, make sure to choose virtualUSB in the multiple options that prompt on install, other options are designed to be used with serial--usb cables and standalone hardware.

After installing PC Suite, install NSS as previously posted or according to "The Giornale" guide. What follows is what sets this procedure apart form all the others

The phone will only sync to the computer in Test or Local mode. These are service only modes that are usually reserved for the carrier or manufacture for maintenance. In order to remove the security code and debrand the phone, one of these two modes needs to be achieved.

The phone achieves this by changing the voltage and amp values being fed to the phone. If you wanted to use the battery that came with the phone, resistors and alligator clips would be in order, but a bench power supply is the easiest and most versatle option. If you dont have access to a bench power supply, you can attach a (7.5k~10k) resistor to the negative lead and use the battery that came with the phone. I would recommend using the power supply, as this is what I used to succeed.

***NOTE: following this process has the potential to damage the phone if the guide is followed incorrectly or the user is not skilled enough, if your not sure, consult a friend who works in electronics... for real)

The battery terminals on the phone are as follows:

( The camera and mini-usb are facing downward)

The battery clips are able to be attached to via hook clips that will grab onto the terminals and insulate them from each other.

I I I

(-) (gnd) (+)

hook all three up to the power supply, and set the input voltage between 3.8v~4.2v and the amp value between 0.06A~0.12A (<-- milliamps!)

It will take some playing with the phone to get the phone to boot into a service mode. It will boot normally, and shutting down the phone and restarting it until it hits Local or Test takes time and practice.

Once it enters Test or Local mode, then the phone can be connected via mini-usb to a computer and these steps can be followed:

Steps:

1. Install Nokia PC Suite v6.84.10.3
2. Download and install Nemesis Service Suite
3. Enable Local or Test mode on the phone
4. Run NSS
5. Click the magnifying glass at the top rightmost corner of the application screen.
6. Click Phone Info button at the top (beside Device Info)
7. Click Scan, under Actions.
8. Choose Tools from the buttons on top (Beside Security)
9. Tick Full Factory radio button, and then click Reset.
10. Go back to Phone Info,and then choose Normal under Power Mode and then press Change.

And.. that’s it! The default has now reverted back to 12345, you should now be able to change the security code.

As posted by Liquid_Skinn and "The Giornale"