I need to update my the version of my chain from homestead to Byzantium. Who can tell me how to do it? thanks.

1 Answer 1


I think you need to modify params\config.go function :

// IsByzantium returns whether num is either equal to the Byzantium fork block or greater.
func (c *ChainConfig) IsByzantium(num *big.Int) bool {
    return isForked(c.ByzantiumBlock, num)

Can return true to allow Byzantium rules.

  • 1
    Thank you for your response. Yes I can only modify the code in my local client, but I can make sure all of the client update to the code by themselves.
    – Allen.wang
    Commented Jul 23, 2018 at 8:26

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