Carl Pei, OnePlus co-founder, said that owners of OnePlus One devices are finally getting OxygenOS. The new custom ROM will function as an alternative to the CyanogenMod 12S. Customers can get the stable build of OxygenOS beginning in the middle until the latter part of March.
The company had previously set a 90-day deadline to update their devices to Android 5.0. However, it missed out on its own deadline and blamed code, proprietary drivers, QA and certifications as the reasons for the delay.
In January, Cyanogen announced that its build of CM12S Lollipop for the OnePlus One was at the "QA/QE" stage for its release. Earlier in February, OnePlus released more details on the upcoming stable build of OxygenOS for their devices. In the same period, OnePlus and Cyanogen released an update known as the CM11S O5Q which users worldwide had been able to access over-the-air (OTA).
"We released an L alpha a while ago, but a more stable build (OxygenOS & CM12S) will need to wait until March. Sorry for delay!" said Carl Pei in a response to a user's query in Twitter.
In the first announcement about Lollipop in July 2014, it was confirmed through a forum post that OnePlus is bringing the Lollipop update to its users within only 3 months from the update's official release. Other companies such as Samsung, LG, HTC and Sony have already rolled out the update to a number of devices through OTA.
Users have expressed their disappointment in the forums with some saying "Yeah, I'm going back to Nexus."
OxygenROM, which was announced earlier this year, had been turned over to Google for the final checks. As soon as it gets released, users would have to manually flash the update.
Pei didn't give a specific date for the release of the two ROMs. However, he said in a separate tweet that the two ROMs should be available by mid to late March. This means that OnePlus One users will have to wait for another month to enjoy one or even both of the new ROMs. It is presumed that the stable version of CyanogenMod 125 will be Android 5.1 Lollipop based while the Oxygen OS will be Android 5.0 Lollipop based.