USCIS itself. Once i came across something called "Notify Consulate" in I-129 form. If this is checked then PIMS is updated, but not too sure about it. You can always e-mail the consulate to check it.

Follow this link for discussion regarding PIMS

http://murthyforum.atinfopop.com/4/OpenTopic?a=tpc&s=1024039761&f=4724019812&m=2141052161

USCIS Must Send KCC Petition Approvals before Visa Issuance
©MurthyDotCom
The new verification system requires that the U.S. Citizenship and Immigration Services (USCIS) send information on all approved petitions requiring visa issuance to the Kentucky Consular Center (KCC), which is part of the DOS. KCC scans and enters all pertinent information including Form I-129, employer support letter, and beneficiary's identification documents into PIMS. KCC also conducts database checks looking for fraud, violations, or other adverse history and records. A petition must be confirmed in PIMS by the U.S. consular post before issuance of the visa. The USCIS has not been transmitting petitions filed for change of status and extension of status to the KCC. Neither have all new petitions for consular processing been transmitted to KCC, resulting in delayed visa issuance to eligible applicants.

Maharjana

Can u tell us how u converted from B1 to F1?