Free app for network unlock BCM21553 based Galaxy devices
and apply Custom binary counter reset.

!!!ROOT REQUIRED!!!

Short list:
Samsung Galaxy Pocket
Samsung Galaxy Y series
Samsung Galaxy Y Pro
Samsung Galaxy Pop Pro (Mini Plus)
Samsung Galaxy Ace (with 832Mhz CPU)
Samsung Galaxy Pocket Duos
Samsung Galaxy Y Pro Duos
Samsung Galaxy Y Duos
Samsung Galaxy ACE Duos
Also a good tool for backup EFS partition for safety reasons.

!!!ROOT REQUIRED!!!

Feature list
Device Info on Lock states and Custom bin counter
- Save backup of EFS partition
- Restore EFS partition
- Unlock all four kind of locks: network lock subnetwork lock SP lock CP lock
- Reset Custom binary download counter to zero

Supported models:

Samsung Galaxy Pocket
- GT-S5300
- GT-S5300B
- GT-S5300L
Samsung Galaxy Y series
- GT-S5360
- GT-S5360B
- GT-S5360L
- GT-S5360T
- GT-S5363
- GT-S5367
- GT-S5368
- GT-S5369
Samsung Galaxy Y Pro
- GT-B5510
- GT-B5510B
- GT-B5510L
Samsung Galaxy Pop Pro
- GT-S5570I
Samsung Galaxy Ace (with 832Mhz CPU)
- GT-S5830i
- GT-S5830C
- GT-S5830M
- GT-S5830V
- GT-S5839i
DUAL SIM models:
- GT-S5302 (Pocket Duos)
- GT-S5302B
- GT-B5512 (Y Pro Duos)
- GT-B5512B
- GT-S6102 (Y Duos)
- GT-S6102B
- GT-S6802 (ACE Duos)
- GT-S6802B

PLEASE DO NOT UNDERRATE IN CASE YOUR DEVICE IS NOT SUPPORTED!