SAO PAULO, Sept 26 (Reuters) - Brazilian telecom firm Oi said on Tuesday it has secured a $300 million debtor in possession (DIP) financing from lender BTG Pactual in order to repay a previous $200 million DIP deal and reinforce its working capital.

The new DIP financing is due on Dec. 15, 2024, Oi said in a securities filing. All in costs, including interest and fees, were set at 20% a year in U.S. dollars, added the company, which is under bankruptcy protection.

Oi reiterated it will continue to hold broad negotiations with its main creditors for the approval of a "revised proposal" for its reorganization process at a future shareholders' meeting. (Reporting by Gabriel Araujo; Editing by Steven Grattan and Louise Heavens)