@domubpkm
After a lot of trying somehow after a reboot from the factory default menu the device came up with OTA-25, all settings saved. Very slow for the first few minutes but now it seems okay. Thanks a lot for your help!
Gr, Willem

@domubpkm
When I do that I get a menu to choose from:

• Recovery gives me a permanent purple screen with Ubuntu on it, nothing happens after that.
• Fastboot does nothing.
• Normal boot gives me the startup screen again and after that black....

@Bolly Yes I already did that, same result....

After OTA 23 install my E5 shows black screen. On restart I only get a the normal bootup screen for a few seconds, but then it turns black. Anyone else having this?