Setup CORS on the bucket along with the above settings for multi-part uploads.
[
{
"AllowedHeaders": [
"content-type",
"x-amz-acl",
"x-amz-meta-sha1-checksum"
],
"AllowedMethods": [
"GET",
"HEAD",
"PUT"
],
"AllowedOrigins": [
"*"
],
"ExposeHeaders": [],
"MaxAgeSeconds": 3000
}
]