W550 with KEY:A1_DB2010_49_BROWN unlock flash by Test Point (selected phone model w550 CID31), to work with phone without Test Point need to convert it to RED , write W550-CID 31-EROM.mcu

W550 with KEY:A1_DB2010_49_RED no need any conversion to unlock it (selected phone model W550 CID 31 NOtp2)

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