T4tek

OnePlus began rolling out the Oxygen OS 3.2 update for the OnePlus 3 three days ago, but halted the new firmware just a day later. The awaited update was supposed to bring sRGB display mode, better RAM management, among other fixes, but was pulled out due to undisclosed issues.
Lots of people got the 3.2 update though and managed to update safely, but there were some with issues while upgrading.
Anyway, OnePlus is now seeding the Oxygen 3.2.1 update, which in addition to the 3.2 features, comes with a few more fixes. If you got the 3.2 update on your OnePlus 3, then this OTA update weighs just 15MB for you and fixes some notification issues and a possible SIM recognition problem. It seems the update also turn the sRGB mode on by default.

If you weren't among those to update to 3.2 firmware a few days ago, then this new OTA file will be a lot heftier at about 300MB. It will improve the RAM management, bring the more accurate sRGB mode for the display, improve the GPS performance, the camera quality, among other things. Here are some of the most important fixes from the change log:

• Fixed some notification issues
• Addressed SIM recognition issue
• Enabled sRGB mode in developer options
• Improved RAM management
• Improved GPS performance
• Enhanced audio playback quality
• Updated custom icon packs
• Improved camera quality/functionality
• Fixed some issues in Gallery
• Implemented latest Google security patches
• Fixed bugs in Clock/Music apps

If you own a OnePlus 3, you should be getting this update any moment now, if not already.
Source • Via