In the next room, scour the area for ammo, the Machine Gun Ammo case, and another green herb. Read the Completion of New-Type Virus document on the desk then proceed through the orange door to the north. Continue along the passage and through the next orange door, then loot the room for ammo. You'll also find two more bits of reading material here - the Malacoda Development Materials document, and the Veltro Agent's Journal 2 document.
When you're ready to continue, head south through the orange door, and you'll see the virus vat directly ahead - you've made it to the control room! There's ammo on top of the containers either side of the walkway (just use the ladders to climb up) if you need a bit more.
This area predominantly consists of a maze formed by invisible lasers. First, take the ammo on the cabinets to the left then break out your scanner and figure out the safe route through the pylons. Your ultimate goal is to reach the orange door to the northwest, but first you'll need to push the button on the wall near the corpse, a little further along the maze.
Pushing the button will reconfigure some of the lasers in the room and form a new path, so about-face and follow the new route around until you reach the ladder leading down to the lower level. Finally, make your through the orange door to the right, paying your respects to the gargantuan creature that casually wanders passed the window as you go.
Now download putty and open it then click on serial communication in putty then type the com port of usb to ttl converter shown in device manager of windows pc then put speed as 115200 then click open and it will start booting then put login: root and pass:1234 and then change the pass and enter your information and your are into your orange pi zero.for more information please refer video. 2b1af7f3a8