Hi Kranti,
Upgrade to SP04 PL01 might not be possible at this point as customer is not ready. But we have installed SP04 PL01 on our local system and will check/test CSRF token related issues/limitations. Here, we are encountering an issue while deployment of OData project (for SOAP WS) on this latest version. Bjoern is helping on this.
Rgrds,
JK