How is the version of Huawei Health APP downgraded?

What version is it now? Huawei's system degradation can be divided into two situations: first, the development version returns to the stable version, or the stable version/development version is downgraded to the same version. In this case, you just need to download the rom package you want to return, and then swipe your card. Second, cross-version returns EMUI. For example, if the package of EMUI3.0 is returned to EMUI2.3, it needs to be subcontracted first, and then the low-profile ROM package can be returned completely. Card swiping step 1: use Huawei backup and other software to back up mobile phone data; 2. Restore the factory settings once to reduce the error rate after swiping the card; 3: Download the rom package corresponding to the mobile phone model at the official station of EMUI China; 4. Decompress the rom package to get a dload folder, and save the folder in sd card 5; Open the phone settings-system upgrade-local upgrade, and the ROM package 6 will be automatically swiped; And restore the factory settings once after swiping the card.