Sorry for late reply. You would need to download and re-flash the ROM. You can make a backup of Data only with TWRP and after you re-flash the ROM you can then restore the Data partition only. This will bring back all your apps you had installed. The only thing is Data doesn't backup items that are on your internal SD-Card storage such as pictures or Kodi settings. For Kodi settings best use an app to backup Kodi or look online how to backup manually it's pretty easy for Kodi.
Thank you,
Alvatech
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