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		08-03-2021, 01:51 PM 
(This post was last modified: 08-03-2021, 02:00 PM by stoatwblr.)
		
	 
	
		As a FWIW: getting into manufacturer mode on bios 2.19
 
launch regular BIOS by tapping F2 a few times right after boot.
hold Power button on BIOS screen to force a shutdown.
now while the laptop is off, press (in order) F4, 4, R, F, V, F5, 5, T, G, B, F6, 6, Y, H, N.
now press Power and tap F2 a few times to boot into the BIOS again.
you should now see all the tabs that were hidden before.
Should be obvious but I'll say it anyways : don't change settings or values you don't understand, as it very well may brick your laptop, manufacturers hide these settings for a reason. I don't accept any responsibility for any damage caused.
I don't see any way of making the tabs permanently visible, but this gets you in there without an unlocked bios (previously posted ones have evaporated from download sites)