Hello! Update on situation. Tried flashing other BIOS files and was unsuccessful, the charging and power lights didn’t even work. So, laptop is fully dead lol. It could probably be revived in a shop but cost might not be worth it.
I suppose this was an important albeit somewhat expensive learning opportunity. As many have stated, do not flash with an external programmer whilst power via battery, charger or CMOS battery are still present. Otherwise 3.3v bus goes sszzzzzz.
Certain laptops may be isolated/shielded corrrectly against this so they are able to withstand this but you must be absolutely certain about this. OR you can try make an external 3.3v source which may or may not work.
Please always try to solder the bios chip out or if possible backup/flash via intel FPT! You will always have a more stable and successful flash.
Thanks @lfb6 for helping me, I appreciate the effort 
Also want to thank the win-raid community for the extensive guides and experiences. Learnt a lot from this forum.