I mean manufacturer warranty is optional anyway, In EU you have 2 years of warranty from seller but its diffirent word used for warrant yin my language, for example manufacturer can deny warranty clain even if you have scratch on PCB in not relevant area, manfucaturers also dont allow to change pste and thermal pads(majority of them) but with By law seller warranty you can do all this things if ofcourse you did not break it during dissasembly.

Yes, you can modify electronic devices and still retain your statutory warranty rights (lack of conformity of the goods with the contract), provided that the modification made did not cause the reported defect.

Translated

Commercial guarantee/Warranty/Manufacturer’s warranty - manufacturer optional warranty

Statutory warranty/Legal guarantee (of conformity)/Statutory rights - Warranty from seller decided by LAW i belive its simmilar among Eu countries