@imedia You don't need to change fuse for OTA. It's mostly for low battery.
I've use mysensors boot loader from MYSController 0_1_2_282.
However you need usbasp bootloader burning cable and also I use avrdudess s/w to burn boot loader.
I don't know why but I was unable to burn bootloader from arduino or any other s/w.
Only problem is after you use mysensors bootloader, you can't use arduino to burn firmware on it.
Ah I use arduino pro mini 3.3V version.

After you load firmware on MYController, you have to reset node to start burn firmware from controller.

Hope this save your time.

Thanks.

@jkandasa You are right. It's working now after clear cache. There is no plan to firmware upgrade at this moment. I will let you know when I do test this function.

@jkandasa Thanks. Finally I've solved the issue but not in MyController.
You are right. I did map new firmware and push reset button then it works however MYSController behavior is a little bit different for battery powered node.

When I look into smartsleep(), it send heartbeat() before going to sleep.
I guess MYSController check firmware version between MYSController and node then if it's different, it send reboot command automatically. Then node restart and process firmware upgrade. So firmware upgrade works well with battery powered node.
If you add this function to MyController, it will be great.

Thanks.

I can confirm smartsleep works fine with mysensors 2.0.0 (battery powered arduino pro mini 3.3V )
Thank you for your support! This is awesome controller!

I can confirm smartsleep works fine with mysensors 2.0.0 (battery powered arduino pro mini 3.3V )
Thank you for your support! This is awesome controller!

@jkandasa You are right. It's working now after clear cache. There is no plan to firmware upgrade at this moment. I will let you know when I do test this function.

@jkandasa Oh, it works now. I have to restart after restore from backup.
After restart server then I'm able to see all firmware^^ however I can't see smart sleep option on firefox.
I can see it on chrome.

@jkandasa Hi jkandasa,
I did upgrade with SNAPSHOT version from google drive.
Seems it works fine but I'm unable to select firmware from node. There are many firmware in utilities.
Do you know this issue?
Thank you in advance.

@jkandasa Is there any easy update Snapshot version. Just overwrite all files?

@imedia @jkandasa

Thank you for your explain. I didn't know how DualOptiboot works.
However if your node is battery powered and has sleep mode, it may work differently.
Mysensors 2.0.0 library has smartSleep() when it wake up, wait 500ms to get command from controller. (You can change wait time from config)
You can place reboot command when node send heartbeat.
I use node-Red to send reboot command because MyController current official version doesn't support this.

I'm not sure how firmware update function work battery powered node with DualOptiboot.

@imedia
Seem you are on the right track. If you make a simple wiki document for newbie after you success, it will be huge help for the community.
English is my second language so it will take long time for me and afraid not crystal clear for everyone^^;

@imedia
Add type
Utilities => Firmwares => Click "Types" on right top => click "Add firmware type" right next => add new record
Add version
Utilities => Firmwares => Click "Versions" on right top => click "Add firmware version" right next => add new record

After you flash MYSBootLoader, you will see the node ID in MYController node list.
You can select the node and click action then you can edit node.
From that screen, you will be able to select one of firmware which you have uploaded in utilities.

Once you upload MYSBootloader, Once you have new bootloader, the node doesn't have firmware so keep sending request to controller to get firmware. Obviously your gateway should work as expected.
Hope this help you.

Cheers~

@imedia One more thing you need to know.
Once you got New boot loader, you are unable to use arduino sketch to put new firmware.
You have to use OTA. It took 5-10minutes;; Not sure what's wrong with this but it looks like mysensors boot loader bug or how it works.

Cheers~

@imedia

Well you'd better see following link to get HEX file.
https://www.mysensors.org/about/ota (search "How to upload a new sketch just with OTA")
Then you can find hex file in build.path

In MyController, you have to create new type and version first then you can select the type and version then upload HEX file.

Once you upload firmware, you can go Resources => Node then you can select any node which you want to uplpad firmware. Then edit node and select firmware.

Don't forget reset node to get new firmware.

Cheers,
YD