hello
the macbook a1811 have lot of problems with h8s/2116 micom.i put new one the power adapter does not come on and stdby voltages +5v and +3.3V not present.it looks the smc firmware from the micom h8s/2116 of new one is blank.when i put from working laptops the micom everything works fine the adapter light come on and power comes on.how can we program the h8s/2116 or is there a way to do isp programming or vai jtag any idea as apple has too many issues with firmware.

You will not find an answer here. Firmware on the MAC - the problem of ages. We must look for a donor.

i do have the firmware the bios chip but how do we copy from the bga package h8/2116lp is when you buy a new blank ic it is blank and will not power up another way to fire up the laptop is when youo press and hold power button and then plug in the adapter and keep holding the power button for 3-4secs it powers up .this is a weird problem i have faced with all macs