Bootloader will not be skipped when flashing. Only some other partitions.
Your bootloader is ZVB now. Lgup shows what is stored in the misc partition. This will change when you boot up the zvb stock rom usually. Sometimes this just don't change especially when doing cross flashing.
You could see more details when using SALT (
https://bit.do/SALTatXDA )
Thank you soo much!
but i have LS991 that what converted to h810 i successfully flashed it with LGUP to LS991ZVB with edited TOT(model changed to h810) but now my phone become network locked!
and i'm trying to flash mellowmallow global image to unlock it!
but it's just stuck there forever after sending dd command! it wouldn't flash! and yes it's tested method but i can't get through!
i m soo confused!

---------- Post added at 04:48 PM ---------- Previous post was at 04:44 PM ----------
Thank you soo much!
but i have LS991 that what converted to h810 i successfully flashed it with LGUP to LS991ZVB with edited TOT(model changed to h810) but now my phone become network locked!
and i'm trying to flash mellowmallow global image to unlock it!
but it's just stuck there forever after sending dd command! it wouldn't flash! and yes it's tested method but i can't get through!
i m soo confused!