DFU with a compressed LZ4 file

Hello,

The app is checking few first bytes of the binary and it's expecting to find there a Magic value. If your binary is compressed, encrypted, etc, it will fail and return an error. 

I recommend downloading the source code of the app and removing the code with the checks.

Hi again, I looked into the manager.start function in Firmware Upgrade Manager which looks as follows:

The line in the for loop calls for fromBytes() function, which I belive is the issue, this looks as follows:

As you can see, many function in here for example getHash() will return error.

How should I go by changing this function in order to not ruin the image information being sent through DFU?

Hi again, I looked into the manager.start function in Firmware Upgrade Manager which looks as follows:

The line in the for loop calls for fromBytes() function, which I belive is the issue, this looks as follows:

As you can see, many function in here for example getHash() will return error.

How should I go by changing this function in order to not ruin the image information being sent through DFU?

I don't think you need any of that. Later in the manager only the byte array is sent. Try commenting out everything that's not relevant to byte array with file content.

Do you mean that I can remove the call for this function completely or keep the byte array in here? The byte array depends on everything in the function so in that case nothing can be removed.