I still have 1511 version and my Surface Pro 4 does not find any

i have surface pro 4 windows 10 version 1511 os build 10586.753 64-bit...

i have noticed surface had problems in past when bigger updates available.

hoping microsoft need time fix reported bugs decided give time.

it happened twice.

after while no problems shown , windows updater reported "your device date."

thought solved.

today still shows device date still have version 1511.

i haven't realize until bought surface dial, doesn't work older version of windows.

i tried download latest iso file , install it. says "the update not applicable computer".

having surface pro 4, not understand why no applicable!?

i tried using windows update troubleshooter. fixed missing or corrupted things don't recall seems ok.

i keep having old version.

i live in europe (croatia), reason such long delay update?

can please me out? posts find older , regard lenovo or other computers. considering device, not sure if "solutions" applicable issue.

thank kind reply.

hi have been here?

Windows / Windows 10 / Windows update, recovery, & backup / PC

Traplo