NOKIA LUMIA 640 512mb Dump Dead Boot Repair firmware
lumia 640 XL RM 1096 02177.00000.15313.35003 firmware
lumia 640 RM 1072 02177.00000.15184.36002 R firmware
lumia 640 RM 1073 02177.00000.15203.26115 R firmware
lumia 640 RM 1074 02177.00000.15184.36002 R firmware
lumia 640 RM 1075 02177.00000.15184.36001 Dual Sim firmware