Dont think its specific to the revision of the board, when i did mine, there wasnt any mention of this,
it was all based to the revision of the firmware,
eg if your HH is using 6.2.6x firmware, then you should be able to downgrade it, then flash the thompson firmware.
I did mine a while ago, so not sure if its changed for the latest HH.
(Had a quick look around scream, and there wasnt any mention of this being specific to boards.)