I decided to update to Firmware 2.1 from 2.0.
The WiFi icon

disappeared. I finally trased it to a locked SD chip. I think the chip may have been set to lock while inserting the SD chip.
I don't remember that happening with firmware 2.0
Anyone with the EM1mk2 with firmware 2.0, can try this,
2 SD chips, set to independent, the Slot 1 to RAW and Slot 2 to JPG. Then preview set to Slot 2. Can you view the JPG from your Oi.Share (android)? Then set the SD Lock on, Is that WiFi icon available?
OR does that firmware 2.1 makes also these changes?