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I have S540-15IWL GTX Laptop (ideapad) - Type 81SW but with the same specs as the model in the guide but can't enter the hidden BOIS tried many times but in vain "Processor (Intel(R) Core(TM) i5-8265U Intel UHD Graphics 620 " I updated the BOIS to bwcN14WW maybe the model name changed when i...