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Fourth generation of iPad, released November 2, 2012, available in 16, 32, or 64 GB models. Model Number A1458

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error 9 , error 40

Hi , i have an ipad 4 which suddenly showed the apple logo during normal use . when i tried to update / restore i got error 9 , i tried a new lightning port , new battery , tried a restore with reiboot pro . also tried another pc and a macbook for the restore …

I removed the board and used naviplus pro to read the nand chip , seems ok , i also repaired the nand with naviplus and tried to restore again , now i get error 40 . , i’m thinking now may be cpu , is there a test to confirm this ? is a link to the itunes restore log

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I,m not sure if i’ve made progress with this or not , i gave the nand chip some heat , plugged it into the naviplus again and noticed the model no R/M . box was blank , i filled this in and it restored ok . now i have activation error !!  ,,  its a wifi only model and i tried the restore with pc and a macbook , same result ,...


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all the way at the bottom of the restore log it says this

[19:07:11.7430] Depth:2 Code:40 Error:storage device did not become available

maybe it is your storage device that is bad, and not a cpu.

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so that would suggest the nand chip , i thought that as the naviplus machine was able to read and write to it ok that would rule that out ..


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markparnell1972 will be eternally grateful.
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