Key Software Issues After Updates on the Redmi K90 Pro Max

Early adopters of the Redmi K90 Pro Max are reporting several post-launch software issues after applying the initial firmware updates and system patches. While the hardware remains compelling, UK buyers should be aware of these bugs so they can decide whether to update immediately or wait for a more stable build.

One of the most frequently cited problems is excessive battery drain following recent updates. Users note that screen-on time and background usage have both increased, reducing overall endurance compared with earlier test results. Some fixes include reducing screen brightness, disabling background processes, or applying the very latest patch when it arrives. (Issue reported in several user-forum threads.)

Connectivity issues have also surfaced. Some units show erratic Wi-Fi dropouts, unstable Bluetooth connections, or cellular signal fluctuations — especially when switching between 4G/5G networks. These seem tied to modem firmware or Radio Interface Layer updates. Until Xiaomi issues a robust fix, switching to 4G only or toggling “Smart Network Switch” can be a temporary workaround.

Another concern is app instability after updates. Users have reported apps freezing, crashing, or becoming unresponsive after upgrading the system. The problem appears more common with pre-installed apps or ones that rely on deep system integration (camera app, gallery, system theme engine). Clearing cache, reinstalling updates, or updating apps individually can mitigate this until a full patch arrives.

Some display-related bugs have emerged too. For example, ghost touches (unintended screen taps), touchscreen latency, and occasional inconsistent refresh-rate behaviour (for instance 120Hz mode not sticking) have been reported. Since the K90 Pro Max uses high refresh and advanced display tech, the patch rollout must address these to maintain the fluid experience promised.

Over-heating under heavy use or charging is also being mentioned by a subset of users. While heavy gaming or 100W charging will naturally generate heat, reports suggest that some devices run warmer than expected after updates, possibly due to power-management changes. Monitoring temperature and charging behaviour is advisable, especially if Westminster or London ambient temperatures add stress.

Camera quirks following updates should also be on the radar. Issues like slow focus, lag when toggling zoom levels, or inconsistency with the periscope telephoto lens have been flagged. As this is a flagship selling point, prospective buyers in the UK who use the camera extensively (night shots, outdoor zoom) may want to hold off major updates until a stable firmware arrives.

What to watch in terms of timing: If your device still shows the factory build or early OTA version, delaying major updates until user forums report stability might be wise. Before updating, back up your data and ensure your apps and system are all ready for the transition. If you’re already updated: keep an eye out for version numbers in the update log and patch notes mentioning bug-fixes (especially for battery, connectivity, camera).

For UK users specifically: update when you have access to stable Wi-Fi (to avoid data drops), ensure your charger is original (to minimise heat risk), and test key areas after the update (battery runtime, Wi-Fi/Bluetooth, camera behaviour) so you can spot regressions early. If you notice serious degradation, rolling back or waiting for the next patch could save you frustration.

In summary, while the Redmi K90 Pro Max offers flagship-level hardware, its early software update phase shows some notable bugs. Buyers should monitor patch release notes, test their device after updating, and consider delaying non-critical updates until stability is confirmed. Approach the first few firmware updates with a mix of enthusiasm and caution.