Sky+ software update

[NickH5]

Power cut and when power returned Sky+ HD box started a system software update 

[Mark39]

Has it completed OK?

[NickH5]

Not sure the update downloaded correctly, now unable to get any lights on Sky Box??

[Mark39]

Try switching the box off at the plug for 4 minutes.

[NickH5]

Switched back on after 4 minutes, orange light flashed on then went off, no other lights on the box?

[NickH5]

How do I redo the system software update??

[Annie+UK]

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@NickH5 wrote:

How do I redo the system software update??

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Q04 of my Sky Plus FAQ 🙂

[Mark39]

@NickH5 turn off at the plug, then press and hold the back button on top of the box, while switching on again at the plug. Keep the Backup button pressed until all 4 lights on the front panel flash. Then follow the on screen instructions 

All that said, I don't think this will work, I'm afraid. I suspect your Sky box is beyond recovery.