i have just installed twrp recovery on my kindle fire 1st generation 6.3.2 and i booted it up,and i hit restore to facrtory,and then wipe everything form everywhere,and so i hit the boot tab,and i hit system,and then it says are you sure you want to reboot?there is no os installed,so i swipe and reboot,and now it is just stuck on kindle fire boot screen,i am so cunfused,what do i do,on the computer,it doesn't see my kindle.