Asus Zenfone 4 Max ZC520KL – ZB520KL Stock ROM (Flash File). Free download Official Firmware ROM for ZC520KL – ZB520KL. You can use it to update and downgrade the device, fixing the device facing bootloop issue or any software issue.
Download ROM for ZC520KL – ZB520KL:
ASUS ZC520KL X00HD FIX HANG ON LOGO_DOWNGRADE FROM 8 TO 7.rar | Download via Server 1 – Download via Server 1
QL1526_Userdebug_F303_1708151800_factory.zip | Download via Server 1 – Download via Server 1
WW_ZC520KL_14.2016.1801.372-20180119.zip | Download via Server 1 – Download via Server 1
– Make sure that Device battery is charged more than 30%.
– Extract the firmware file with the latest version of winrar or 7zip.
– Always check Device model before downloading the firmware file.
– Also install a latest version of USB Driver before installing firmware file.