How to get stock recovery?

[dilliong94]

I had rooted my honor 5x to lineage os but wanted to go back to stock emui but forgot to back up my stock os so I flashed one from XDA it's at 3.1 lollipop. I still have twrp but want to update to emui 4.0 marshmallow. Is there a way to update to it with twrp or a way to get my stock recovery back? I don't have my PC anymore as I sold it to a friend is there a way to do it without a PC? Sorry for the noob question this is there first time I've ever rooted my phone.