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Security Zone and GDFS - FAQ

Hi all,

There were some questions about GDFS and security zone, i'll try to explain shortly.

Security Zone is a part of GDFS, which contains information about SIM-locks. Our Cruiser Suite Ultimate Unlocker and D-Ultimate Unlocker modify strictly the security zone, and perform a full and correct rebuild. GDFS Backuper & Restorer (Cruiser dongle needed) allows you to repair all non-security zone GDFS related problems.

GDFS contains much more information, there are a lot of data which are phone specific and cannot be rebuilt 100% correctly (for example Calibration data)

Rebuilding of security zone helps if:

• the phone is able to power on but has all locks locked
• in the cases, when the security zone is damaged, and phone is unable to power on due to this

If one of the following symptom appear, try the advised solution.

Symptom: Phone red-blinks when powered on
Reason: Damaged security zone
Solution: Rebuild security zone (see Goals below)

Symptom: Phone works, but all 5 locks closed
Reason: Damaged security zone
Solution: Rebuild security zone (see Goals below)

Goal: Reconstructing GDFS in a phone + rebuid of the security zone
Procedure:
1. Take another working phone, use GDFS Backuper & Restorer (Cruiser dongle needed) (without selecting a file) and create a backup
2. Use Cruiser Suite Ultimate Unlocker or D-Ultimate Unlocker, select the GDFS backup file, proceed an unlock

Regards
Cruiser Team