![]() |
#1 |
Fanatic
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 568
Karma: 2170348
Join Date: Apr 2011
Device: 2x Sony PRS-350; PRS-300 (†), Paperwhite (†), Voyage
|
![]()
First: I don't have hope that someone can help. But hope should always be the last thing vanishing...
![]() The question is: Does anyone know a possibility to UNBRICK a Sony PRS 350? Facts: I flashed a non functional firmware (my mistake) on the 350 It sticks now in an boot loop Restarting every 20 seconds Black progress bar goes around 5mm to the right then rebooting again No possibility to mound the reader as USB drive No hard/soft reset possible Thanks for advices or words of hope ![]() |
![]() |
![]() |
![]() |
#2 |
Fanatic
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 556
Karma: 1057213
Join Date: Sep 2006
Location: North Eastern U.S.
Device: Sony Reader
|
What happens when you plug it into the PC's USB port? Does it go into "USB Connected" mode, or does it keep restarting? Does the hard reset do you any good?
|
![]() |
![]() |
Advert | |
|
![]() |
#3 |
Lucifer's Bat
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 2,536
Karma: 19491715
Join Date: Nov 2010
Location: Earth/Berlin
Device: Kobo Libra 2
|
I'd wait until the battery is empty and then plug it into a wall charger and hard reset. Worked with mine when it was not answering to anything anymore.
Good luck! |
![]() |
![]() |
![]() |
#4 |
Fanatic
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 568
Karma: 2170348
Join Date: Apr 2011
Device: 2x Sony PRS-350; PRS-300 (†), Paperwhite (†), Voyage
|
OK, I try to be very exact:
- the reader ist in boot loop - after each restart the progress bar advances about 4mm - white - then restart - today the battery emptied out - after connection to PC the boot loop started again --> so no chance (which was my hope) - there is (nearly) no USB-device available on the PC: when the reader restarts, for approx. 3 seconds there are the 2 drives visible. But time is to short for managing something. And inbetween the 3 seconds, the 2 drives are only visible if you switch on the visibility for hidden files and folders in the optins of windows. No files or folder are visible in the two drives. I guess, the time is to short for the system to recognize the drives correctly. Boot loop advances. - It is not psosible to interrupt the loop. I tried everything I could imagine: 1) Holding ANY possible combination of at least 2 buttons for at least one cycle 2) Try soft reset; try holding the soft reset "button" (hold a stick into the hole) for at least one boot sequence 3) Try hard reset (but that ist just one of the under point (1) mentioned combination of holding buttons a longer time 4) Tried holding any possible combination of one button and holding the soft reset "button" for at least one sequence 5) Tried holding soft reset "button" and switch off slider togeter for at least one seqence 6) Tried holding the off slider and any other button togeter for at least one cycle For any combination (there are a lot of possibilities) in 99% the same reaction follows: nothing --> keeping cycling. Ah, I forgot: i've done this with and without USB-cable connected to the PC. At one or the other combination the boot cycle interrupted for a couple of seconds - reader switches of (white) just for starting again cycling. If the reader is connected to the PC the very short visibility (shall I call it a "flash") of the USB drives is independent of holding or pushing buttons. I tried to flash the reader while cycling. Of course the reader could not be recognized. Edit: flash files from BORODA A. Last edited by Analogus; 05-21-2011 at 04:44 PM. |
![]() |
![]() |
![]() |
#5 |
Lucifer's Bat
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 2,536
Karma: 19491715
Join Date: Nov 2010
Location: Earth/Berlin
Device: Kobo Libra 2
|
This is why I suggested to let it run completely dry and then to plug it into the wall charger and not into the computer. Mine didn't answer anything but this. Just be ready to push the buttons instanteniously when the device is plugged in. I think you have to hit when the short gap is before it is going into its loop once again.
|
![]() |
![]() |
Advert | |
|
![]() |
#6 |
Fanatic
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 568
Karma: 2170348
Join Date: Apr 2011
Device: 2x Sony PRS-350; PRS-300 (†), Paperwhite (†), Voyage
|
Thanks for advice - but it doesn't work. Power was completely empty, plugged into wall charger, waited for waking up - pressed the two buttons --> cycling goes on.
Did it serveral times. A. Last edited by Analogus; 05-21-2011 at 06:06 PM. |
![]() |
![]() |
![]() |
#7 |
Wizard
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 2,888
Karma: 5875940
Join Date: Dec 2007
Device: PRS505, 600, 350, 650, Nexus 7, Note III, iPad 4 etc
|
Think that you should press buttons immediately you plug in without waiting for wake up so reset precedes getting back into loop...
|
![]() |
![]() |
![]() |
#8 |
Fanatic
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 568
Karma: 2170348
Join Date: Apr 2011
Device: 2x Sony PRS-350; PRS-300 (†), Paperwhite (†), Voyage
|
|
![]() |
![]() |
![]() |
#9 |
Resident Curmudgeon
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 75,671
Karma: 134319570
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
|
Call Sony. just tell them it's not booting and not what you did. they'll probably send you a refurbished unit and have you then send in yours.
|
![]() |
![]() |
![]() |
#10 |
Enthusiast
![]() Posts: 26
Karma: 10
Join Date: Jan 2011
Device: Sony PRS-650
|
Are you able to turn it off? From the sounds of it you are not able to. But if you can turn it off and then plug it into a computer so it immediately goes to charge and hopefully give you access to internal memory.
You said sometimes you get a drive letter for just a few seconds? If so I'd try to time running the batch file from boroda's site that puts your reader back to stock firmware. In the batch file you may want to endless loop it so it keeps looking for the Reader and also remove the yes/no prompt to continue flashing your reader. What do others think of this idea? Last edited by bbriand; 05-24-2011 at 12:59 PM. Reason: clarifying a point |
![]() |
![]() |
![]() |
#11 |
Fanatic
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 568
Karma: 2170348
Join Date: Apr 2011
Device: 2x Sony PRS-350; PRS-300 (†), Paperwhite (†), Voyage
|
Thank you for your advice. But I already tried this several times. I even tried to use a batchfile that tries in an endless loup to copy/delete one or two distinct files on(to) the reader. Problem's always the same. Time is to short for windows to recognize the drive correctly.
A. |
![]() |
![]() |
![]() |
#12 |
2B || !2B
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 851
Karma: 194010
Join Date: Feb 2010
Location: Austria
Device: Sony PRS505/650/T1/tolino vision 5
|
There should be a way, but it's a hard one, and I can just point the direction, you will have to search this forum or google for more information.
If I remember correct there is a serial port direct on the main-board. This port runs a serial-console while booting and thru this port it should be possible to upload a new bootblock, maybe a whole firmware. Contacting the pins to access the serial-port was done with needles. I think it was igorsk who published this first, and I remember there was a blog/post/?? maybe over at the-ebook.org, explaining how to unbrick a PRS-600 in the early days. Mark |
![]() |
![]() |
![]() |
#13 |
Lucifer's Bat
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 2,536
Karma: 19491715
Join Date: Nov 2010
Location: Earth/Berlin
Device: Kobo Libra 2
|
![]() Acupunture ![]() It nearly makes taking it up with Sony Customer Service sound like an easy task... |
![]() |
![]() |
![]() |
#14 | |
PRS+ author
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 1,637
Karma: 2446233
Join Date: Dec 2007
Device: Sony PRS-300, 505, 600, 650, 950
|
Quote:
|
|
![]() |
![]() |
![]() |
#15 |
Fanatic
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 568
Karma: 2170348
Join Date: Apr 2011
Device: 2x Sony PRS-350; PRS-300 (†), Paperwhite (†), Voyage
|
ms tools:
Did make hope in the beginning - but the reader could not be recognized by the tool. Time's too short I guess "Device is not connected to PC". Tried it of course veeery often... Concerning "acupuncture": have to find more information. But that should be the last option to open the reader and messing around on the motherboard. A. |
![]() |
![]() |
![]() |
Tags |
flashing, problem, prs-350, unbricking |
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Kindle 3 Boot loop | jlove | Kindle Developer's Corner | 13 | 05-17-2011 05:23 AM |
PRS-650 Boot loop after large changes | Soul_Est | Sony Reader | 5 | 11-29-2010 12:12 PM |
Opus cannot boot, stuck on boot screen | baloma | Bookeen | 35 | 11-13-2010 04:20 AM |
Hacks Any advice on unbricking the Kindle 2? | synapse | Amazon Kindle | 5 | 01-20-2010 08:45 PM |
Help unbricking my 505!!! | StanleyPhang | Sony Reader Dev Corner | 1 | 07-07-2009 04:05 PM |