Stock ROM / Firmware for Motorola Moto X4 (XT1900) DOWNLOAD: PAYTON: XT1900-7_PAYTON_TMOPL_9.0_PPWS29.69-37-5_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip XT1900-7_PAYTON_PLAYPL_9.0_PPWS29.69-37-5_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip XT1900-6_PAYTON_RETBR_9.0_PPWS29.69-26-6_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip XT1900-6_PAYTON_RETBR_9.0_PPW29.69-40-4_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml.zip ...