Lucky. I have to hunt around for DTBs based on modified Rockchip and Freescale SoCs to update my devices.
I am unwilling to distribute said binaries to make it easier for people with the same hardware as I to update their 3 year old software. That, too, is a shame.
You don't even need a secondary tool. The standard devicetree compiler, dtc, can convert a dtb back into a dts no problem. The dtb format is a pretty basic serialisation of the dts file, so fairly little information is lost (mainly pre-processor stuff like includes and some macros for constants) and you can easily round-trip.
I am unwilling to distribute said binaries to make it easier for people with the same hardware as I to update their 3 year old software. That, too, is a shame.