GExtract is "A little program for converting main firmware files to .raw format". To obtain hebrew language you must flash a "S_ASIA_LEVAN" firmware. For example, if you have EROM CID52, you should flash:
W850_R1KG001_MAIN_GENERIC_CY_RED52
W850_R1KG001_FS_S_ASIA_LEVAN_RED52
HB1-06_Gen_CDA102568_110_R5A_GENERIC_S_ASIA_LEVAN