samsung j320y unknown baseband done by twrp recovery

[junjie007]

history : nabagsak

result : mmc checksum error

try ko mag flash ng J320YXXS1ARA1_OLB1ARA1_Repair_Firmware_4Files
no luck
last step
root
flash twrp recovery
Boot into TWRP recovery
TWRP’s main screen, selectAdvanced » then Terminal
type the following commands in terminal
dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst1 then enter
dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst2 then enter
reboot device