Root Failed J701MT Custom binary(BOOT) Blocked due remaining installment balance

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Root Failed J701MT Custom binary(BOOT) Blocked due remaining installment balance

Opening Port COM28...........OK
Verifying Download Mod
OK
Initialization.......OK
Reading Phone Partitation Table........OK
Partition Size : 8192
Unpak pit .......OK
FLASHING FIRMWARE TO PHONE.....
Writing: boot.img.......OK
FLASHING DONE!
Rebooting PDA TO NORMAL MODE......
ERROR : phone unable to accept data, wrong command sent..OK

OEM unlock and no frp active