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Solution for UNSUCCESSFUL UNLOCK (Incorrect Code)
J250F / J250FD / J250G / J250GD
1) Write LATEST version firmware (StockROM)
2) Enter Network Code calculated by SamKEY (phone will accept code now)
J250F / J250FD / J250G / J250GD
1) Write LATEST version firmware (StockROM)
2) Enter Network Code calculated by SamKEY (phone will accept code now)