This is new info to me:
"Hydrogen bromide and hydrogen iodide can also be made by reaction of the sodium or potassium salt with acid, but phosphoric acid must be used instead of sulfuric acid. Hot concentrated sulfuric acid oxidizes bromide and iodide ions."
-- pg. 978, General Chemistry by Jean B. Umland
Love my country, fear my government.
There was a post on this recently in the acquisition forum. Alternatively, search Rhodium's page for the procedure.
Post 271993 (https://www.thevespiary.org/talk/index.php?topic=8645.msg27199300#msg27199300)
(Argox: "Hydriodic Acid--Step by Step Write-Up", Stimulants)