Chosen Solution

Hello! After repairing an iPhone 5s, the phone booted into recovery mode. I connected the device to iTunes, and tried to both update to 8.1.2 (no luck, kicks device back to “Update or Restore?” option) and restore (again, no dice, simply returns to update or restore). I am provided no error code by iTunes, it extracts the software, enters restore mode for several minutes and then exits back to “The software on ‘iPhone’ needs to be restored to factory settings or updated.” Anyone experience this? I was very careful in the repair, one I have done probably 200+ times without this error.

Hello there you have damaged something during the repair most likely motherboard.. Did you disconnect battery during the process?

Have you tried holding power + home to get it out of recovery mode