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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > iPhone ,iPod & iPad (Apple Inc. Products) > iPhone, iPad, iPod Hardware Repair

iPhone, iPad, iPod Hardware Repair Hardware Repair discussions for iPhone, iPod , iPad & Apple Products, help, guides.

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Old 01-06-2013, 09:37   #1 (permalink)
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Exclamation iphone could not be restored an unknown error occurred (-1)


hi
i recently get iphone 4 its getting hang with apple logo when i tried to restore 6.0.1 I get "The iPhone could not be restored. An unknown error occurred (-1). now phone shownig itunes logo any solutions please post here
Thanks
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Old 01-06-2013, 09:39   #2 (permalink)
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Quote:
Originally Posted by sharaz191 View Post
hi
i recently get iphone 4 its getting hang with apple logo when i tried to restore 6.0.1 I get "The iPhone could not be restored. An unknown error occurred (-1). now phone shownig itunes logo any solutions please post here
Thanks
download again new firmware....-1 means firmware problem
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Old 01-06-2013, 09:40   #3 (permalink)
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download again new firmware....-1 means firmware problem
no its host file issue.
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Old 01-06-2013, 09:43   #4 (permalink)
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bro may b but um solved my problem via firmware so i share it
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Old 01-06-2013, 10:14   #5 (permalink)
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i download ios 5.1.1 and 6.0.1 but same problem
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Old 01-07-2013, 04:13   #6 (permalink)
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Hi. Last week I had two 4s with error -1 on my table. Solutions were:

1) Cleaned corrosion around amplifier chips (I think BATT_VCC_FET line was partly short)
2) U18_RF were bad, so I took this from a scrap board. It is an AND gate, so I believe you should be able to jump this (feeding BB_HSIC_RDY voltage), I would not recommend it though, get a replacement part it's not a hard IC to solder.

Also you should inspect capacitors around U4. Hope this helps.
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Old 01-07-2013, 14:45   #7 (permalink)
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Quote:
Originally Posted by sharaz191 View Post
hi
i recently get iphone 4 its getting hang with apple logo when i tried to restore 6.0.1 I get "The iPhone could not be restored. An unknown error occurred (-1). now phone shownig itunes logo any solutions please post here
Thanks
Error -1 Modem Firmware did not got updated,if phone dropped reball BB CPU,BB NAND and PMIC.
If phone water damaged check voltages and 2 coils near BB CPU there was an solution in (tested solutions thread) just search.
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Old 05-30-2013, 12:57   #8 (permalink)
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The same problem i have

Hi,all

my iphone 4s ,was in water damaged ,its on recovery mode and i cant restore that, its going truth until coming iphone up and then give
the iphone could not be restored an unknown error occurred (-1)
anyone knows about this?how can i fix it?
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