[Q]Flashmode disconnects every minute

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kentexcitebot

Senior Member
Mar 30, 2014
575
483
Moorpark
Hi,

My Xperia Z1 (C6903) (A.0.757) is being weird with USB connection to the computer. I shutdown my phone and put it in flash mode, then went to grab some FTF files online. When I looked at my phone again, it was at the home screen. So I shut it down again and held the cable to the phone port, but in about a minute or 2 disconnects and reboots into the OS. The weird part is the phone never disconnects in the OS.

Code:
 Android version : 4.4.2 / kernel version : 3.4.0-perf-g6f5bf40 / Build number : 14.3.A.0.757
14/038/2014 16:38:00 - INFO  - Device disconnected
14/038/2014 16:38:04 - INFO  - Device connected in flash mode
14/039/2014 16:39:05 - INFO  - Device disconnected
14/039/2014 16:39:29 - INFO  - Device connected with USB debugging on
14/039/2014 16:39:29 - INFO  - Connected device : Sony Xperia Z1
14/039/2014 16:39:29 - INFO  - Installed version of busybox : N/A
14/039/2014 16:39:29 - INFO  - Android version : 4.4.2 / kernel version : 3.4.0-perf-g6f5bf40 / Build number : 14.3.A.0.757
14/041/2014 16:41:19 - INFO  - Device disconnected
14/041/2014 16:41:22 - INFO  - Device connected in flash mode
14/042/2014 16:42:23 - INFO  - Device disconnected

I switched the charger cables and it did the same with flashmode. I switched ports on my computer and I still have the same problem.

Is my USB port damaged? Does flashmode have auto reboot when idling?

I'm afraid it'll disconnect while flashing, that would be death sentence to my phone.
 
Last edited:

kentexcitebot

Senior Member
Mar 30, 2014
575
483
Moorpark
Did it again and I got this:

Code:
14/049/2014 18:49:56 - INFO  - Device connected in flash mode
14/050/2014 18:50:56 - INFO  - Device disconnected
14/051/2014 18:51:20 - INFO  - Device connected with USB debugging on
14/051/2014 18:51:21 - INFO  - Connected device : Sony Xperia Z1
14/051/2014 18:51:21 - INFO  - Installed version of busybox : N/A
14/051/2014 18:51:21 - INFO  - Android version : 4.4.2 / kernel version : 3.4.0-perf-g6f5bf40 / Build number : 14.3.A.0.757
14/054/2014 18:54:18 - INFO  - Device disconnected
14/054/2014 18:54:22 - INFO  - Device connected in flash mode
14/055/2014 18:55:22 - INFO  - Device disconnected
Notice how it disconnects from flash mode exactly 1 minute.
 
Last edited:

Jonas740

Senior Member
Apr 17, 2014
87
5
It was the same for me. It disconnect after a while. Don't know how long it takes though.

So I prepare the files and w8 for the prompt to connect the phone. That works for me anyway.

Sent from my C6903 using XDA Free mobile app
 

blikie

Member
Jan 24, 2014
36
9
It was the same for me. It disconnect after a while. Don't know how long it takes though.

So I prepare the files and w8 for the prompt to connect the phone. That works for me anyway.

Sent from my C6903 using XDA Free mobile app

Which version flashtool are you using?
I had this issue on an older version.
back then i basically just keep holding the vol down button and proceed flashing.
annoying to do but that was the only way for me.
Didnt have this anymore with the latest version.