This brings me to another question :
would it be possible to get the old kernel from the empeg over serial? this way logoeditor could first create a backup of the old kernel before applying a new one. Great for backout purposes without destroying any customizations to the root fs

Yes, I'm pretty sure it is theoretically possible. I think that you can do flash reads over serial as well as writes. That would be kind of a nice feature to add to the logo editor.

The hard part is working out all the details of the communication protocols and handshaking in the opposite direction. Everything in DOWNLOAD.C is engineered towards a send, rather than a receive.

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Tony Fabris