Nokia’s Open source releases page usually got updated with a source formula of Nokia 7 Plus. HMD is regulating program protected underneath a General Public License (GPL) and Lesser General Public License (LGPL) that means it has to recover a source formula used for devices. HMD can yield usually comparison tools of source formula that developers can use to make tradition ROM’s for that you’ll need unbarred bootloader. Unfortunately, this is probable usually for Nokia 8 that bootloader is a usually one unbarred by now.
If we revisit Open source releases page we can download a several codes of Nokia 8, Nokia 7 Plus, Nokia 6.1, Nokia 6, Nokia 5.1, Nokia 3.1, Nokia 3, Nokia 2.1, and Nokia 1.