Huawei has released a software update for its Honor Band 4 and 5 (review).
The update is currently available for Chinese users, but is expected in other regions soon. Honor Band 4 update 220.127.116.11 fixes known bugs.
The update for the Honor Band 5 is bigger. Firmware number 18.104.22.168 optimizes performance, including heart rate display, and adds access to hundreds of new watch faces. Note that at the time of launch, the Honor Band 5 offered only 8 watch faces.
Huawei recommends making sure the bracelet is more than 20% charged before updating. It is also noted that the update process can take about 20 minutes.