The most common and most likely answer to this crossword clue is the 6 letter word REWIRE
R
E
W
I
R
E
Buddy explains!
The straight part
We know that "I" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case i = rewire.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 REWIRE mean?
REWIRE verb- To replace or reconnect the wires of a device or installation.
- To change the functionality of something by altering the parameters or logic.