Chosen Solution
Hey guys. I have an iPhone 5C here with a recovery mode forced into the device. i boot up the apple logo for 2 seconds, then switches to recovery mode. I connect it to itunes, and try to restore and update. The update downloads all the way fine, then extracts well also. the problem arises while the device is “preparing iphone for install” (Waiting for iphone). When this happens, it switches to the apple logo, like its about to install, but instead of the standard progress bar, it turns off, then on again, and goes right back to recovery mode. +=+=+=+=+=+=+=+ i verified continuity on the power button and home button i tried 2 OEM USBs, tested on other apple devices fine i replaced the charge port, from a separate device, that was working fine i tried 3 different PC ports, including a 3.0 port i tried both my laptop and desktop computer. none of these fix the issue.
Have you tried running a bare-bones system…battery, Lightning port, logic board and screen to see if this helps. Some techs report issues with proximity or camera. This could be NAND related. I had a 6 that did essentially the same thing. I tried all of the above and then some, even reballing the NAND to no effect. Based on the research I did, it is a corrupted NAND. Perhaps others will have different or better ideas.
