The most common and most likely answer to this crossword clue is the 8 letter word UPGRADED
I've seen this crossword clue in Financial Times
U
P
G
R
A
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D
More clues leading to the result UPGRADED
Buddy explains!

The straight part
We know that "Promoted" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case promoted = upgraded.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does UPGRADED mean?
UPGRADED verb- To improve, usually applied to technology, generally by complete replacement of one or more components
- To replace with something better.
- To improve the equipment or furnishings of or services rendered to
- To improve in condition or status.
- To replace a program with a later version of itself, a version having a higher version number or marketed under a more recent product name.
- Having had an upgrade; having been improved or enhanced.