My phone is Xiaomi Mi4c. I have uninstalled lot of stock Miui apps, but I was told that uninstalling MiuiGallery and MiuiVideo was a mistake. So I wanted to re-install them. I got the following advice: It worked for MiuiVideo, but it doesnt work for MiuiGallery. I get the following message when I try it: After thta I read that I dont need to manually install it, that I just need to copy it to system/priv-ap and reboot the phone, but nothing happens. Is there any other solution? What happens if I re-flash ROM? My phone is rooted and Im using xiaomi.eu_multi_libra_6.1.28_v7-5.1 Do I keep all my data and apps? Can I lose any data or personal settings? Do I reflash it via updater or via TWRP? The main problem I have becuase I deleted MiuiGallery is - the images i added to contacts are not showing when Im calling a contact or receiving a call from that contact..