Samsung Gt-c3520 Flash File And Tool Exclusive -

You need a or ISP programming box (e.g., Medusa Pro or Easy JTAG) to write directly to the NAND chip. This is not a DIY operation for most users.

: With the phone off, press and hold the Left Soft Key + Call Key + Power Button until it restarts. samsung gt-c3520 flash file and tool

Flashing the main firmware does remove a network SIM lock. You need a separate unlock code or specialized software. You need a or ISP programming box (e