iabhishek113 Sorry bro, I don’t have any experience with downgrading the Android version. If you need files e.g. Open Beta 2, or Rollback 2.0.4, I can share them with you because I keep those files while playing Open Beta.
I do not recommend downgrading because it may brick your phone if you make a mistake.
Usually, the NothingOS fix solution is a factory reset, it resolves most of the issues, except existing bugs that come with the software. That one needs to wait for the next update lah.
The best approach is, to contact Nothing Support and they willingly guide you on how to do it. 😉