Hi, no one knows how to help me

Hello!! As mentioned, I'm slowly introducing OTA into my nodes.
But I found a strange problem, after having done OTA of a scketch, it's all OK and the node works.
But after 3/4 lack of power supply to the node (for example, lack of electricity, due to bad weather), the node no longer has the scketch inside and to make it work I have to make a new OTA.
A behavior, can anyone help me ???

I write my scene here

• Arduino pro Mini 5v 16Mhz
• Radio nRF24
• For OTA I used MYSController
• FUSE Arduino settings L = 0xF7 H = 0xDA E = 06

Thanks in advance of the Attention

Good morning!! I need a clarification, I have some MySensors nodes that work regularly, and on some of these I have also activated the Firma Software, so far all Ok.
Now, as a matter of convenience, I am introducing the OTA overruns.
My question is, in a node with a signature to which I want to add OTA, how to proceed ???

1. I customize the Node
2. Load the new Bootloader
3. Load the new sketck via OTA

it's correct?? or are the steps to follow others?

Thanks to those who want to clarify my ideas

@jimmy-loyens said in Is it necessairy to use child id when requestin battery level or sketch name ... ?:

me richiedere valori da un nodo. Quando si richiede una temperatura o un altro sensore leggendo la sua logica per consentire al nodo di rispondere tramite il figlio del sensore in questione. Ma cosa succede se si richiede un messaggio interno come il nome dello sch

Hi, I'm bothering you for an info.
You said that: "request a value at a node"
And one thing that interests me, can you share how you do ?? Thanks for the time you want to dedicate ....

Hello!! And thank you again ......
A really good job, it's something that was definitely missing ......
I would suggest to the directors to expand the guide on OTA you better explain the steps to change channels and make a link to your great job !!

Now if I understand this and the Bootloader that I have to load on my Arduino Pro-Mini, in practice insert in the path of the IDE of Arduino when I make the updates use that channel

As soon as I can I try them and I'll let you know, in a lot of thanks again ......

@sindrome73 Hi Good evening, and I'm sorry for the delay in the reply.
As you have never done a Bootloader, if you are kind enough to do it, I thank you.
The channel I'm using is the "Channel 84" for now I'm using only the 16MHZ Bootloade, but if you want, the others are fine too.
In addition you can give me some starting point to be able to fill in too ??
Thanks for your availability, greetings

@guillermo-schimmel Thanks for the reply.
Very useful, but can you tell me more accurately what software to use to recompile after making the change ????
Maybe some links to the software to download ..... thanks again for the availability

@mfalkvidd Hello.
From what I read it is possible to somehow modify the channel for OTA updates, this is also said here.
https://www.mysensors.org/about/fota

But I can not find other info on how to proceed to change the channel .....
Can you give me some other clarification or link to follow ???

this is a good place to start and start to understand.
I'm not a lot of diggers, however I start reading something, and in case I'll ask for help
In a lot of thanks

@kimot I did not understand what you tell me, can you explain better or with some examples ??