My System Apps Were Gone After Firmware Update

[gastondefer]

First off, l'd like to thank you for taking some time out to read this.

I just bought a used HP Prime G1 Rev A from an individual today.
It looks really clean and doesn't show any sign of abuse. However, the owner apparently never updated the firmware. When I checked it iwas on CAS version 1.1.0-27, from 2013 I believe. So I immediately wanted to update it to whatever that was recent (2020 01 16). I already had the latest Connectivity Kit installed on my PC. I plugged the calculator in, it automatically booted to the recovery mode without me doing anything at all. I then got a prompt on the computer asking if I wanted to update. The whole update took less than 3min. After it rebooted, except for the regular explorer app, all the other explorer apps where gone (Quadratic, trig, and linear explorer) ; the data Streamer apps was grayed out as well. Any suggestion would be much appreciated.

Thank you in advance.