Chosen Solution
Hi I installed the battery following both the manual and YouTube video you provide. I didn’t notice anything out of the ordinary but when trying to update, my phone gives me a 4013 error. I tried restoring it as well but it does the same thing. Any suggestions would be grateful. Thank you
Try the suggestions from Geoff Ice and let us know the results. Error 4013 is usually NAND related (data corruption). You could try a DFU Restore as well but it may be a board level repair.
