Historical Future Order Book level 2 Data before 23/5

Hi team, how to download Historical Future Order Book level 2 Data before 23/5

Previously there's https://github.com/binance/binance-public-data/tree/master/Futures_Order_Book_Download
but now it's 404

and here https://data.binance.vision/?prefix=data/futures/um/monthly/bookTicker/BTCUSDT/
there's only data from 23/5

thanks.

Start with the referenced Futures_Order_Book_Download path and the Binance Vision futures bookTicker listing for BTCUSDT. Determine whether historical level 2 data before 23/5 exists elsewhere in the repository or data service. Done would be a documented, verified download location or a clear statement that the data is unavailable.

Written by the indexing model from the issue text.