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40-150 f2.8 bricked by EM1mkii

Started Jan 14, 2017 | Discussions thread
karlreed Senior Member • Posts: 2,650
Rather scary.. 40-150 f2.8 bricked by EM1mkii
1

My experience of USB connections via hubs is that they can be AWFULLY flaky. So, this needs to be kept in mind if updates must be by a direct connection to the computer, ior, internet rather than via a card.

However, best practice for this kind of update is NOT to destroy the current version until the update is complete AND the system has been re booted.

This can be done by booting via a pointer to the active system. The VERY LAST THING the updating s/w does is to change this pointer to point to the new systems.

All the other comments about check sums etc. of course apply, however, tricks like this date back at least to the late 1970's. It's now 2017!

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karl reed

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