there is no version 7 which exists according to changelog
github.com/react/react/blob/main/packages/react-devtools/CHANGELOG.md#react-devtools-changelog

does not work in next.js 16

It worked well but hasn't been updated in over a year. The app breaks with the latest React/Next.js libraries due to a bug with params and searchParams in Firefox. There is last 7.1 version in Chrome that works fine. Is Firefox still supported?

Funcionou apenas por alguns minutos no firefox developer edition. E então parou de funcionar completamente.

it doesn't work in Firefox browser

The chrome plugin is much better, this one is superlaggy. Shame really....