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they broke because of kdcan flashing... kdcan chinese fw is the cause

Chinese k-dcan can't transfer big blocks of data(255 bytes), they do it sometimes with trash, and winkfp doesn't double check what was written, so when it checks signature at the end of flash it fails. For example xhp works with chinese kdcans, because it will rewrite data until it will match.But this has nothing to do with this thread, because you cant kill ECU with Chinese d-can it will still communicates. So please, stop flooding about thing that you don't know.

First, WinKFP was never designed to work with crap HW. Why would it be???

Second, IMHO there is no way for WinKFP to know what was actually written into the unit. At least on some of units. Else it would be easy to read flash over OBD which is NOT always the case. xhp works with a limited set of units, so it's NOT a good comparison AT ALL.

Third, YES, you can easily kill units with wrong flash data. Especially simple units like ZBE which do have have luxury of having enough spare flash/RAM to store data received in some unused buffer to first verify it, then reflash itself from that buffer. Those units are rewriting their flash as soon as data was received. Yes, bootloader should start in emergency mode and allow reflash blah blah blah. That is IF it itself was updated properly. We are talking about E series here where flash was not that low cost before it dropped and became mainstream.

So do NOT blame others for telling TRUTH you don't seem to know yourself.