Transferring payload in multiple chunks to S3 bucket

Im starting topic here as a continuation of that problem. I wanted to do chunked upload using AWS Signature Version 4. I successfuly upload single file using temporary credentials form downloading demo from aws-iot-device-sdk-embedded-C. Then i tried to upload in chunks 2048 bytes buffor. As this example guide me, when im doing chunked upload im getting 400 Bad Request response. I also checked if i was calculating signatures in correct way, as input data i used example data and it was correct. Did anyone can suggest what is wrong with my request? I also tried request without x-amz-security-token and got 400 Bad Request. Thank you for help!