I attempted to upgrade the wifi from the UI to V2.8 (from 2.6)... I got a message that the upgrade the upgrade reported OK and even on the OpenEVSE - it said Wifi upgrade successful... however, I can't access it even after a restart.
Usually restarting the charger, it show wifi info, but it isn't anymore.
What should I do? Should I manually reload/reset the wifi module? How do I do that? Is there a guide?
I do have a USB programmer that I use to upgrade the Arduino firmware.
Just wondering if anyone could help me out. I'm wondering if I bricked my wifi module... Is there a way to reset the firmware on it by any chance?
I'm in the same position as you in that I have just bricked the WiFi module upgrading to V2.8.
To answer your question, no reset on the board will bring it back so we are both faced with either sending it back to have OpenEVSE for them to replace the firmware (a courtesy service they provide) or do it ourselves. In my case as I live in Australia, I will try and do it myself as the postage cost will exceed the cost of the USB to Serial Adapter. You say that you already have a USB programmer so you may not need anything else? The board is actually an adafruit Huzzah (ESP8266) so if you search online, you should be able to find directions on how to flash it.
Please tell us how you get on and good luck!
You should be able to find a board on eBay that you can connect to the ESP8266 without having to solder anything.
I bricked my board in exactly the same circumstances as you described so perhaps there is an opportunity to improve the software to prevent this from happening to other people.
The board I ordered is still a few days away so once I have successfully upgraded the firmware, I will indicate the method and software I used.
Further to my last, I managed to find a old ESP8266 in my junk pile that had a microUSB socket for programming and power and thought I would see if I could upload the 2.8 firmware to establish the update process while I wait for the board to programme the Huzzah to arrive. Having loaded the correct drivers for the board, I downloaded NODEMCU FIRMWARE PROGRAMMER from a link on:
along with the 2.8 firmware (firmware.bin) from github and placed it in the root of drive C. I then configured the NodeMCU software as per 2.PNG and then selected Flash as per 1.PNG and after a few minutes, the update was complete. I was them able to login to the ESP8266 via WiFi as per normal so success!
Hope that this will be of some help when you get around to updating your board.
Cable arrived today and Huzzah updated to 2.8. Procedure worked as previously advised but don't forget to put the board into programming mode by simultaneously pressing both buttons. Obviously have to connect TX to RX and RX to TX for valid communications. Picture attached which indicates what the pins are on the Huzzah.
The following is a link to the one I purchased which should give you an indication of what you should be looking for:
Glad that you managed to get it sorted.
Suggest that you check it when plugged into the programming cable as it is powered and transmitting the WiFi signal so you can login rather than installing it and having to remove it again if not working.