I have moved this thread here but there isn't a specialist section here in Toms's Hardware.
If this is an Android problem, may I recommend you go to www.tomsguide.com because there you will find the right sub-Forum where you'll get the best answers.
V30 runs Android v7 (Nougat). V40 runs Android V8 (Oreo). Is this what you are after? You will have to wait for LG to release (of ever) Oreo on V30, or check places like xda-developers for hacks.