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The representative attributed the delayed announcement of this issue to Chinese New Year celebrations last week. A software team member in the OnePlus community forum has since advised that users should not install either of these upgrades. When these firmware patches began to roll out in late December, they prevented some phones from booting.
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It was an incremental update after this that caused problems - version number LE2111_11.F.19 for the 9 and LE2121_11.F.19 for the 9 Pro. The stable version of OxygenOS 13, based on Android 13, originally rolled out to the OnePlus 9 and OnePlus 9 Pro in November. The company had to halt the release of its latest OxygenOS 13 firmware upgrade for the OnePlus 9 series because some devices refused to boot after applying the OTA. Unfortunately, attempts by OnePlus to get its older flagships up to date with modern software have gone awry. Meanwhile, even Google struggled to deliver the January Play system update to the Pixel 6 and 7.
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Moreover, the new build of OxygenOS includes a fix for the black screen bug while opening the OnePlus Logkit app.
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Besides the bump in the Android security patch level (SPL), the update also addresses an issue related to frequent crashing of Google Chrome on these phones. According to a recent post on the OnePlus Community forums, the OEM has started the incremental rollout of OxygenOS 10.3.5 for the OnePlus 6 and OnePlus 6T.
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