Different FW revisions on Master and Slave, fix for "WW non-pairing issue"

If your devices don't pair with each other and you see different FW revision numbers on Master and Slave devices, you MUST upgrade to the latest and greatest FW from our Web Update Server.

FW update procedure is identical to master or slave devices. If your FW revision number is lower than 2.058, there will be one stepper upgrade (to the 2.058 version) and one final upgrade to the 3.XXX version. Here is the upgrade process:
1. Connect power to the unit. TIP: Please note that low voltage (5V, 1A) power source could be used, for example USB-C phone charger will be sufficient for FW upgrade and quick connectivity test.

2. Push the side button on the unit to enable AP. Once button is pushed you will hear a long beep and LED will turn WHITE.

3. Search for the WIFI network named WW_SD_XXXXXXX if you working with SLAVE unit and WW_MD_XXXXXXX, if you working with MASTER unit. Connect to that network and select "connect automatically" option.

4. Open the web browser and go to 192.168.4.1. USER: admin, PWD: admin123. Go to Network tab, search and connect to the local WIFI network. TIP: if you having difficulties of finding the device AP (WW_SD_XXXXXXX) or connecting to it or connecting to your local WIFI network, device reset may help. Another trick - manually input your local WIFI network name, instead of searching it.

5. Once you connected to the local network, you MUST use it for FW upgrade: close the browser window with local AP default address of 192.168.4.1, also make sure that no pings running to 192.168.4.1 as well. Open new browser window and type your local WIFI IP that was assigned for your device and access the device's GUI, go to "Maintenance" tab and click "Check & Update" button.

6. If you FW revision number is lower than 2.058, there will be one stepper upgrade (to the 2.058 version) and one final upgrade to the 3.XXX version. TIP: Remember to turn on the AP for the second upgrade, after reboot. Your LED must be WHITE during the upgrade process, it means that WIFI module is enabled on your device.

7. Once both devices upgraded to the same, latest 3.xxx version, they should successfully pair with each other and you're done with the upgrade.

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