Can”t read code unlock From E2530

Welcome to Octoplus/Octopus Box Samsung software version 2.2.1
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Platform: Samsung Infineon
Selected model: GT-E2530
Selected port: USB
Phone must be OFF, and the battery must be fully charged
Please, connect USB cable and reconnect battery.
Connecting…
Phone found.
Sending loaders…
Sending preloader…
Sending preloader failed.
Performed by 2.2.1 software version
—————————————————————————–
Platform: Samsung Infineon
Selected model: GT-E2530
Selected port: USB
Phone must be OFF, and the battery must be fully charged
Please, connect USB cable and reconnect battery.
Connecting…
Phone found.
Sending loaders…
Sending preloader…
Preloader send successfully
Sending mainloader…
Mainloader send successfully
Reading codes…
Reading codes successfully completed.
Performed by 2.2.1 software version

I flash it many time error is same