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Help Dead phone after system update

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Tor Fredriksen

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Feb 26, 2022
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#1
During installation of a system update on my Galaxy S7, the screen started alternating between a blue screen with the android logo and a black screen with several error messages. The error messages is shown very briefly but one of them are: "fail to open recovery_cause (no such file or directory)". This went on and on and on ....
After searching a bit on internet, I tried to enter Recovery Mode (Volume Up + Home and Power). This removed the alternating screens but now the phone is totaly dead.
I've tried numerous key combinations without any responce. I've charged the phone. I have also connected the phone to my PC with an USB-cable. No response. I have removed the SIM and memory card and reinstalled them again. I am not able to get any response at all from my phone. Any suggestions?
 
#2
sounds like a dead phone. your phone is way past its prime. not really surprised this happens.

if you could get to download mode, you might be able to flash a firmware update provided you have usb debugging turned on before the phone went dead. if you can't get to download mode or recovery mode, then you are pretty much SOL......sorry
 
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#3
How were you updating a s7? It will be years since the last update for that model was released.

This isn't idle curiosity: knowing exactly what you were doing may help understand the current situation.

But really if it is simply unresponsive then there's nothing you can do yourself: at best it will need specialist equipment to fix it.
 
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#4
Hadron said:
How were you updating a s7? It will be years since the last update for that model was released.

This isn't idle curiosity: knowing exactly what you were doing may help understand the current situation.

But really if it is simply unresponsive then there's nothing you can do yourself: at best it will need specialist equipment to fix it.
Click to expand...

I also believed there would be no more updates but a couple of days ago there was a message that a new system update were available and I could choose to install immediately, during night at 02:00 or reject (as far as I could tell, it looked just like the previous update messages I've received).

I chose to update during night at 02:00. The next morning the uppdate had not been installed so I then chose to start the update manually. After that, the problems occured as described.
 
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