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Worked on Macbook Air, with usb pen ran on Lenovo Thinkpad !!

You're my savior!
I've been wasting all my afternoon and night to solve this, and finally the solution!
Thanks a lot!

For the records, I was using the M4 from usb on a macbook air, as my macbook pro 15" late 2011 broke (affected by the world-wide graphic card issues, thanks APPLE!!).
I followed your instructions to prepare the usb pen from the macbook air, but then I needed a computer where to stick the M4.
A Lenovo Thinkpad T420 did the trick!

To the other users in a similar situation: if it doesn't work straightforwardly, get in the BIOS, and set UEFI mode to "legacy only" or something similar.



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