Interesting, thanks for reply - right now I need to manually update a V40 using a KDZ. Not actually crossflash in my case, just manual update. Same model and software region.
Units without serial number are not accepted by LG Bridge and cannot receive OTAs. I have manually updated such units of G7 and V30 many times using LGUP, but due to LGUP 1.14 being incompatible with V40, this has not worked here.
If there is a way to manually update V40 using KDZ without LGUP I am very interested. Ideally preserving userdata.