I think he was asking whether OS4 is supported by the KickFlash
Kickflash OS4 is of little use with the OS it takes it's name from. OS4 has much larger kickstart modules than OS3.x. The bare minimum of components occupy around 1.6MB with fairly heavy compression, so not only is Kickflash inadequate, but an eFlash with twice the capacity would suffer a noticable delay as the modules are decompressed.
I mailed Jens about the promised Kickflash upgrade over a month ago but have not received a reply.
Until the issue is addressed it should be renamed to Kickflas OS3.
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1960 Ford History