"To update the formula" means to make changes or modifications to a set of instructions or calculations used to solve a problem or achieve a desired outcome. Full definition
Malloy's latest version also updates the formula for distributing state education funding to schools. (wshu.org)
are generally pleased with the product, though some cats are finicky since the company updated their formula. (businessinsider.com)
The UK Government and devolved authorities have today introduced Statutory Instruments updating formula and baby food marketing laws in line with new EU regulations. (babymilkaction.org)