I have the latest version of RecalBox Beta and Raspberry Pi 3B+

I do not know how to make remount partitions as RW:
@substring said in Testers wanted: major system upgrade (Pi3b+, KODI 17 and much more ...):

• know the very basics of Linux:
  • remount partitions as RW

So most errors are likely because of this.
The following errors I noticed:

• After adding the game to favorites and shutting down, it freezes on a black screen (below the build number)
• In Locoroco (psp), the videos do not work, the sound goes. However, the game itself is going well!
• After the reboot, wifi does not work, you have to write the password again. It feels like he can not decipher the key.
• YouTube is not working in KODI
• Saved to PSP did not work, but after installing assets in configs it worked
• WinSCP error: Incoming packet was garbled on decryption w/ winscp (FileZilla works great)