wiping a nexus s? - Nexus S Q&A, Help & Troubleshooting

i'm still unable to resolve the phone's inability to reboot itself cleanly w/o getting the android symbol & exclamation mark. Would wiping the phone completely resolve this issue? I havent been able to get the recent OTA because it wont reboot w/o an issue.

Wrong area, this is the development section. Q&A

ok, can you or the admin relocate the thread to the appropriate section. thx

It probably wouldn't but might.
Take a backup on your SD card and wipe the phone.
If that doesn't resolve your issue you can do a: fastboot oem lock, and then a: fastboot oem unlock, and then root it again.

Related

need help soft brick after ics update

I rooted the phone following the steps here on the xda thread and I tried afterwards upgrading the firmware to ics. I followed these instructions http://www.android.gs/update-htc-one-s-with-rooted-android-4-0-4-ics-2-31-401-5-firmware-rom/ and afterwards my phone just keeps restarting and restarting. I didn't make a recover image because I was too confident that it was going to work. Afterwards I panicked and pressed factory reset, thinking everything will turn back to normal. I lost all the files I saved onto the sd card and I don't know what to do now. I can't even use the all in one kit. Please help, I greatly appreciate it
Why?!?! This is a Q..belongs in the Q&A! Run an RUU.
willg0r said:
I rooted the phone following the steps here on the xda thread and I tried afterwards upgrading the firmware to ics. I followed these instructions http://www.android.gs/update-htc-one-s-with-rooted-android-4-0-4-ics-2-31-401-5-firmware-rom/ and afterwards my phone just keeps restarting and restarting. I didn't make a recover image because I was too confident that it was going to work. Afterwards I panicked and pressed factory reset, thinking everything will turn back to normal. I lost all the files I saved onto the sd card and I don't know what to do now. I can't even use the all in one kit. Please help, I greatly appreciate it
Click to expand...
Click to collapse
Lock your bootloader. Flash the Factory RUU from this thread. Everything will be wiped but you will have a fresh clean phone. Then you can use my toolkit to root your phone.
Also, this should be in the Q&A.
how can i flash the rom if i cant even connect my phone because i wiped my sd card and it doesnt recognize my phone
1 - Post in the right section.
2 - READ other threads and do the work yourself. I suggest the thread that talks about fixing a brick.
C'mon people...
i apologize for posting in the wrong forum im desperately in search for a solution and i cant find one so what am i suppose to do?
Bro you just need to to lock your bootloader..go into bootloader, open a cmd window on your computer, and type "fastboot oem lock". Then run the carrier specific RUU..

[Q] Any way to fix a boot loop without wiping all data?

My stock, untouched, unrooted HTC One S has randomly got itself stuck in a boot loop. It goes through the 'quietly brilliant' screen, onto the 'htc one' screen and then it restarts. I am desperately trying to recover my files and photos from the memory before I try a Factory Reset, because while these.threads mention ways to recover deleted files, these.posts from the OP suggest that it doesn't work for files lost to a factory reset.
Things I have tried:
Selecting the 'Recovery' option from the bootloader shows a black screen with green arrows on it for about 10s, but then the green arrows change to a red triangle with a '!' in it and it eventually reboots into the same loop.
Connecting to the phone using ADB over USB fails as the device is unseen. I believe this is failing because the phone is locked, and/or does not have USB debugging enabled on it??
The Fastboot tool does seem to be able to see my device, but from what I can tell fastboot is more used for flashing ROMs, and I'm not really trying to do this.
So my questions are:
Does anyone know of a way to access the files/folders on my device in its current state?
Since the SD card on the One S is fake, is there a way for me to fix the section of memory that boots the device, whilst leaving the storage bit untouched?
Any advice is greatly appreciated as I've got a lot of personal photos and videos on the device. I didn't think to back them up because on previous phones they've always been safely accessible on a physical card =(
Thanks in advance,
Tom
Hi Tom,
I'm not familiar with stock recovery, as I unlocked and rooted my device almost immediately. So I'm not really sure, but here are some suggestions anyway:
Try and see if vol-up or -down gets you in a state where you can get adb when booted into stock recovery.
You can also try and fastboot boot directly into a custom recovery image, but that may not be possible with a locked bootloader.
If not, I'm afraid you're SOL, since unlocking wipes the storage.
-Jobo
I cant think of any way to recover from this situation except reflash ruu but then your sd card is wiped. Did you not activate dropbox?
What about vol down and power, rebooting into HBOOT? Then can't you dd if sdcard of?
Or fastboot pull /sdcard/ C:\Users\User\Desktop\sdcard
Sent from my locked, tampered ville
I'm in the same situation, it happened on Thursday night (the 8th), when did your's start? I'm struggling to find a solution for this as well. The closest I've got to anything is that on Linux Ubuntu, when I book the phone connected to my laptop one the second (out of three) boot screens it recognizes the device as an inaccessible HTC Phone, disappearing then once it reboots. Nothing is accessible.
Thanks all for your replies. I'll try to respond in order...
@Jobo - Sorry to be a noob, but how do I boot into stock recovery? The Recovery option from the HBOOT screen fails like I said above. Regarding fastboot, does it let you boot into an image that is stored on your PC? Is that how it works? Obviously I'm not going to be able to get an image onto the phone without most likely wiping everything. FYI, my HBOOT screen says ***LOCKED*** on it, but the phone was bought outright so it is not locked by a provider.
@gazknight - I saw Dropbox more as a solution for the One S's limited storage capacity. Since I didn't expect to go over the fixed limit, I didn't really think I'd need the service. Backing up for security's sake would obviously have been a good idea but then I've never had a phone break quite so suddenly as this so I didn't think to do that.
@usaff22 - I can get into HBOOT successfully, but in this state (or whilst in the FASTBOOT menu) my SD card is not mounted and not visible over USB. Does the DD command require a mounted drive? Also, is it a LINUX command? I'm running Windows on my laptop, but with the Android SDK installed. I tried FASTBOOT PULL, but that's not a recognised command when I try it; listing the commands available only shows options like 'flash', 'erase', 'format', 'boot' etc.
@nickrr1 - Mine went bad just a few days before yours I think. I see what you mean, I think; on Windows, when I leave the phone connected via USB for the duration of its boot loop, a mounted drive does appear for just a few seconds, but if I click it it says "Please insert a disk" and then it's gone within a few seconds.
tommy_g003 said:
Thanks all for your replies. I'll try to respond in order...
@Jobo - Sorry to be a noob, but how do I boot into stock recovery? The Recovery option from the HBOOT screen fails like I said above. Regarding fastboot, does it let you boot into an image that is stored on your PC? Is that how it works? Obviously I'm not going to be able to get an image onto the phone without most likely wiping everything. FYI, my HBOOT screen says ***LOCKED*** on it, but the phone was bought outright so it is not locked by a provider.
@usaff22 - I can get into HBOOT successfully, but in this state (or whilst in the FASTBOOT menu) my SD card is not mounted and not visible over USB. Does the DD command require a mounted drive? Also, is it a LINUX command? I'm running Windows on my laptop, but with the Android SDK installed. I tried FASTBOOT PULL, but that's not a recognised command when I try it; listing the commands available only shows options like 'flash', 'erase', 'format', 'boot' etc.
Click to expand...
Click to collapse
Locked means the bootloader being locked/unlocked, not the SIM's state.
dd if of should work after typing adb shell. Have you tried flashing a recovery in fastboot? I need the sdcard partition number though, for the dd to work.
It is fastboot flash recovery recovery.img (recovery should be named recovery.img and placed in the fastboot folder)
Edit: tried this?
http://forum.xda-developers.com/showthread.php?p=25557817#post25850720
tommy_g003 said:
@Jobo - Sorry to be a noob, but how do I boot into stock recovery? The Recovery option from the HBOOT screen fails like I said above. Regarding fastboot, does it let you boot into an image that is stored on your PC? Is that how it works? Obviously I'm not going to be able to get an image onto the phone without most likely wiping everything. FYI, my HBOOT screen says ***LOCKED*** on it, but the phone was bought outright so it is not locked by a provider.
Click to expand...
Click to collapse
As I said, I'm not familiar with stock recovery and I don't have it installed.
After you select recovery from hboot, and before it reboots again, does it respond to the volume buttons?
Yes, you can fastboot boot into a recovery image without copying the file to the device:
fastboot boot recovery-cwm-ville.img (substitute the actual file name of the recovery image. but im not sure whether this requires an unlocked bootloader.)
As usaff22 pointed out, **LOCKED** means bootloader locked, not provider SIM locked.
usaff22 said:
Have you tried flashing a recovery in fastboot? I need the sdcard partition number though, for the dd to work.
Click to expand...
Click to collapse
He can not flash recoveries since his bootloader is locked.
The sdcard partition is /dev/block/mmcblk0p36
EDIT: Here is another thought:
Have you tried booting into safe mode? (Power on the device, when on the boot splash hold vol-down and keep holding until you feel a long buzz or until you see 'safe mode' in the lower left corner of the screen.) If not, you can try to fastboot erase cache and even fastboot erase userdata. This should not erase your sdcard, just your apps and app data, but it might get your device back into bootable state, if the bootloop was caused by a user app or some corrupted user data.
usaff22 said:
Edit: tried this?
http://forum.xda-developers.com/showthread.php?p=25557817#post25850720
Click to expand...
Click to collapse
That will erase the sdcard. The whole point of this thread is to save the sdcard contents.
touch of jobo said:
That will erase the sdcard. The whole point of this thread is to save the sdcard contents.
Click to expand...
Click to collapse
My bad. Sorry.
I wonder if the following will work:
dd if=/dev/block/mmcblk0p36 of=C:\Users\UserAccount\Desktop\
Have you tried the wipe user data option in HBOOT? Not clear storage, if I remember correctly there is another option to wipe user data.
usaff22 said:
I wonder if the following will work:
dd if=/dev/block/mmcblk0p36 of=C:\Users\UserAccount\Desktop\
Click to expand...
Click to collapse
It will not. dd must be run on the device. What would work (on a linux host) is this:
(adb shell dd if=/dev/block/mmc0p36) > ~/rescued_sdcard.img
But still .. you would need to be able to get an adb shell first.
Thanks so much for your time and suggestions on this. I've tried a few things now, but to no avail so far...
ADB - Still no luck with this. I think this is expected because of the state my phone is in... I have read that it needs to be actually booted up, and with USB Debugging enabled for it to work.
Safe Mode - No joy. I can use a long press of Volume Down to get a long buzz, but then it still reboots a few seconds later.
Recovery Boot - Selecting Recovery from the HBOOT menu and then pressing/holding the Volume Up and Down buttons does not seem to have any effect. I'm not sure exactly when I should be pressing them, but I have tried a few different methods and it always ends up on the same red triangle screen.
Fastboot - This does seem to be connecting, but because the damn thing is locked I'm getting access errors when I try to do anything useful...
fastboot erase cache works, but then rebooting normally or with safe mode both fail as usual.
fastboot erase userdata fails with a "remote: not allowed" error.
fastboot boot ville_recovery_signed.img posts success at reading the image file but then it fails at the 'booting' stage with the same remote access error.
HBOOT wipe - My only two options relating to data at the top level menu are 'FACTORY RESET' and 'CLEAR STORAGE'. I have not tried selecting either of these, so I am not sure of any deeper options, but I did research these options and it does seem like they will likely wipe my SD data. I am wondering though if maybe the FACTORY RESET might save my data on the SD partition. This is the opposite of what an HTC support guy told me though.
Also I found a report of another poor guy having the same issue this week. Add 'www' to the following: peoplesrepublicofcork.com/forums/showthread.php?p=4528285 (soz, I can't post links yet)
>_< Why didn't I just back up my photos & videos!?!
UPDATE:
So after a bit of back-and-forth with HTC's tech support over the last few days, I got some instructions from them to use the Factory Reset...
HTC: "...I would like you to perform a factory reset of the phone. This will erase all data saved to the memory of the phone, but will not clear the phone storage..."
ME: "...Will the Factory Reset really spare the 'storage' as suggested, or is this wording aimed at phones with a physical SD card?..."
HTC: "On the HTC One S there are 2 different types of storage. The phone memory and the internal storage of the phone. A factory reset will erase all data from the memory of the phone, but leave the phone storage intact, it is easiest if you think of phone storage as an internal SD Card. There are 2 settings on the phone which reflect this, a factory reset and the option to clear storage. If you choose a factory reset of the phone your internal storage should remain intact and your photos will not be wiped from the device."
So I did the Reset, and the phone now boots, but I've lost all my photos and videos. They don't show up on the phone; they don't show up on a mounted drive; they don't even show up using typical 'undelete' software on the mounted drive. Thanks for the great advice, HTC!
Now my last option is to follow this thread, but this will involve me knowingly voiding my warranty on a piece of hardware which I already know is potentially unreliable.
So I think I'm just going to give up....
What a drama...
@tommy_g003
How did things work out? Did you manage to recover your data after the factory reset?
I have exactly the same bootloop problem you described and I'm beyond despair. Over the past couple of weeks I've used an app on my phone (PCM recorder) to record interviews for my master thesis. I've backed up several of them, but not all... I have gone above and beyond to get these interviews and there is no way I'll be able to redo them. I really truly cannot lose these recordings!
I think at this point I'd rather even sacrifice my phone by physically removing the storage from it and somehow recovering the data from it, but I have no clue whether this is even possible.
I read a thread (androidforums. com/htc-wildfire-s/560123-unrooted-wildfire-s-bootloop-help. html - remove spaces in url) that describes how to re-flash the stock ROM when not rooted. Presumably this can fix the bootloop, while not deleting the internal storage. Does anybody know if something like this exists and works for the One S as well?
jazzmijnhv said:
I read a thread (androidforums. com/htc-wildfire-s/560123-unrooted-wildfire-s-bootloop-help. html - remove spaces in url) that describes how to re-flash the stock ROM when not rooted. Presumably this can fix the bootloop, while not deleting the internal storage. Does anybody know if something like this exists and works for the One S as well?
Click to expand...
Click to collapse
Running a RUU will erase your sdcard. So will unlocking your bootloader. Don't do it.
You can try booting up in Safe Mode (power down, boot back up and as soon as you see your boot splash (quietly brilliant) hold vol-down until youre fully booted.
You can try erasing your data and cache partitions in fastboot, and then booting back up.
Both of these suggestions were already offered in this thread so you probably tried already, but just to make sure.
Finally, you can look at the unbricking tutorial in the development forum, and see if the same method can be used to extract partition #36. Personally I've never had to unbrick/downgrade, but maybe someone familiar with the process can weigh in. If this is possible, you can then mount it and extract the files from it. Since you're not unlocked and you can't unlock (without losing your data) you'll have to be able to get into download mode by powering up holding vol-up.
I haven't really got any further with this. My One S now works, but I'm avoiding using it for now until I've imaged & extracted its storage for a salvage op (see the link in my post above) and I'm too lazy to go about rooting etc. right now in order to do this.
I had the exact same issue as you, multiple times now.
First time I did a factory reset and everything was erased (pics, videos, downloaded apps, etc).
After that I'm just doing clear storage - which removes all the apps that were installed and all configuration, but my photos, videos, and all other documents remain intact.
Fix bootloop without losing data
After my phone shut down because of the % of the battery, it was low, phone got stucked on samsung logo after power up. I dont want to lose data on my phone, how can i recover data first and then factory reset it, or to access device without losing data, is it possible? If its not, ill do the factory reset....

Please assist - Unusable Razr HD ( Spent 5-6 hours so far no luck )

Hi team,
Wondering is someone can assist or point me in right direction for fixing my wife's Razr HD. ( Australian Telstra GSM )
Issue - Currently phones starts goes to OS , however all andriod apps / core services are stopping making it unusable, usually phone will start ask for pin and within 30 seconds all apps and core services stop ( with error messages etc ).
So here is what happens and i have tried.
1. Tried uninstalling apps ( eg whatsapp / facebook etc .. ) it uninstalls sometime before the freezing / errors - but once you reboot those apps come back as there never uninstalled :|
2. Erase all data it never works it lets me press the button , but on reboot come back to original problem OS.
So i decided i should root / install custom rom or even stock rom ).
1. Boot Loader - Unlocked ( did that on motorola website no issues )
2. Tried Installing customer recovery in fastboot ( it flashes , however it goes to original recovery dead gread andriod with red traingle with belly open !, after flash i have not let it boot to OS still the same issue) - i think it has original-recovery.p file in system i cant delete it or rename it ..
3, Rooting - tried rooting no luck .. i can connect via ADB however system is read only ( doesnt let SU , busy box etc to copy or execute at all ) - tried motochoppper/ saferoot no luck .. it cant write or copy or exceute SU.
So i tried few other extreme measures as below..
fastboot erase system or -w
fastboot erase data
fastboot erase cache
All successful , however after that still boot to original OS.
Tried installing Stock ROM/Firmware using - RSDLite , it seems to install copied the files on reboot .. same old OS ..
i can goto fastboot , i can run adb shell command ( but its read only system ).
i am really stuck here wondering if you guys help / much appreciated.
rgds.
Have you tried factory reset? Or boot into safe mode?
Zeljko1234 said:
Have you tried factory reset? Or boot into safe mode?
Click to expand...
Click to collapse
Factory reset yes , however after device reboot it does nothing comes back t same faulty OS.
Safe mode?
Safe mode.
You may try to flash rom again but be very careful with unlocked bootloader. It's strange that you cannot boot into custom recovery holding volume down and power after you flashed it.
Zeljko1234 said:
Safe mode.
You may try to flash rom again but be very careful with unlocked bootloader. It's strange that you cannot boot into custom recovery holding volume down and power after you flashed it.
Click to expand...
Click to collapse
Tried flashing , in safe mode no luck either , any other suggestions?
Cheers,
You probably left your USB plugged in after you flashed Recovery and that set you back to Stock Recovery.....unplug the usb....
Hmm sounds like symptons that my dad's old Nook color experienced being stuck in read only mode. Tried everything but it was stuck in that read only state no matter what I did. Hopefully that is not the case for your phone. Have you tried house of moto or other compatible utility to restore back to stock?
this happened a few times on an older faulty version of twrp. until someone can figure out how to remove the write only from fastboot, there is no utility or script that will fix it.
no one was able to figure it out before, unfortunately, your phone is likely toast.
Just saw this thread and it sounds exactly like what just started happening to my phone yesterday. I was unlocked, and rooted, with stock VZW (US) ROM. All was fine. Then started getting app error popups like you state and tried using TWRP recovery to install a backup I had made and it appears to work only if I DO NOT check the 'data' box. When I try and wipe data, it errors out as well. I am worried something caused it to get stuck in read only mode like one of the last comments in this thread and the phone is toast, but not just.
If you find anything or figure it out please let me know, I'll do the same....
desitunez said:
Hi team,
Wondering is someone can assist or point me in right direction for fixing my wife's Razr HD. ( Australian Telstra GSM )
Issue - Currently phones starts goes to OS , however all andriod apps / core services are stopping making it unusable, usually phone will start ask for pin and within 30 seconds all apps and core services stop ( with error messages etc ).
So here is what happens and i have tried.
1. Tried uninstalling apps ( eg whatsapp / facebook etc .. ) it uninstalls sometime before the freezing / errors - but once you reboot those apps come back as there never uninstalled :|
2. Erase all data it never works it lets me press the button , but on reboot come back to original problem OS.
So i decided i should root / install custom rom or even stock rom ).
1. Boot Loader - Unlocked ( did that on motorola website no issues )
2. Tried Installing customer recovery in fastboot ( it flashes , however it goes to original recovery dead gread andriod with red traingle with belly open !, after flash i have not let it boot to OS still the same issue) - i think it has original-recovery.p file in system i cant delete it or rename it ..
3, Rooting - tried rooting no luck .. i can connect via ADB however system is read only ( doesnt let SU , busy box etc to copy or execute at all ) - tried motochoppper/ saferoot no luck .. it cant write or copy or exceute SU.
So i tried few other extreme measures as below..
fastboot erase system or -w
fastboot erase data
fastboot erase cache
All successful , however after that still boot to original OS.
Tried installing Stock ROM/Firmware using - RSDLite , it seems to install copied the files on reboot .. same old OS ..
i can goto fastboot , i can run adb shell command ( but its read only system ).
i am really stuck here wondering if you guys help / much appreciated.
rgds.
Click to expand...
Click to collapse
---------- Post added at 03:02 PM ---------- Previous post was at 02:52 PM ----------
I am guessing this might be the issue and I am experiencing it as well. However, I have no idea how that could have happened in the first place. I never tried to do anything with TWRP until after the phone began acting funny with all apps crashing (pop ups stating that) and the phone essentially becoming unusable.
When I am in TWRP and do wipes (factory reset, or advanced wipes) it seems to wipe everything fine, even the data partition. However, when I try and write to that partition it fails (i.e. restoring a backup including the data partition). If I don't include the data partition the restore works, but the phone is still crap.
Does this sound like the issue you mention below (data is stuck on read only and there is no way around it)?? If so, anyone in the market for a decent looking paperweight??
bweN diorD said:
this happened a few times on an older faulty version of twrp. until someone can figure out how to remove the write only from fastboot, there is no utility or script that will fix it.
no one was able to figure it out before, unfortunately, your phone is likely toast.
Click to expand...
Click to collapse
surfmly said:
Just saw this thread and it sounds exactly like what just started happening to my phone yesterday. I was unlocked, and rooted, with stock VZW (US) ROM. All was fine. Then started getting app error popups like you state and tried using TWRP recovery to install a backup I had made and it appears to work only if I DO NOT check the 'data' box. When I try and wipe data, it errors out as well. I am worried something caused it to get stuck in read only mode like one of the last comments in this thread and the phone is toast, but not just.
If you find anything or figure it out please let me know, I'll do the same....
---------- Post added at 03:02 PM ---------- Previous post was at 02:52 PM ----------
I am guessing this might be the issue and I am experiencing it as well. However, I have no idea how that could have happened in the first place. I never tried to do anything with TWRP until after the phone began acting funny with all apps crashing (pop ups stating that) and the phone essentially becoming unusable.
When I am in TWRP and do wipes (factory reset, or advanced wipes) it seems to wipe everything fine, even the data partition. However, when I try and write to that partition it fails (i.e. restoring a backup including the data partition). If I don't include the data partition the restore works, but the phone is still crap.
Does this sound like the issue you mention below (data is stuck on read only and there is no way around it)?? If so, anyone in the market for a decent looking paperweight??
Click to expand...
Click to collapse
if your phone goes to read only because of that faulty version of twrp, its toast. i am sorry for your loss
He can try to flash correct twrp...
Zeljko1234 said:
He can try to flash correct twrp...
Click to expand...
Click to collapse
that may work in some rare cases.
i hope this poster is one of them!!! that it works.
if the entire phone goes to read only. i havent seen a solution on any forum.
bweN diorD said:
that may work in some rare cases.
i hope this poster is one of them!!! that it works.
if the entire phone goes to read only. i havent seen a solution on any forum.
Click to expand...
Click to collapse
Well it looks like I was able to get through some of it. I followed the instructions here: http://www.droidrzr.com/index.php/topic/49699-1834614xt926-ota/. I did the extra step of going to stock 183 (unrooted) and then flashed the update in that and the phone is working fine. I am already unlocked (have been for long time), but not rooted at the moment. I believe I can root now (being that I am unlocked) but haven't tackled that yet. At the very least I have a phone that works for my upcoming business trip.....
BTW - the TWRP I had installed has been used on my phone for a long time (8-12 months??) so not sure why that version all of a sudden would have caused the issue, but at this point it doesn't appear to have been that issue (with data locked in read only mode).
I'm really glad that you found solution for you and for all of us who may have the same problem in the future. Thx.

[Q] fastboot device without loosing data. Possible?

Hello!
Lets start with this. I have a big problem with my nexus s. A few day ago following problem occured. Everytime if i switch it on it seem to stuck in the booting mode. I can see the colored X on the display but the system wont start. I have stored some sensible and important data on the phone. Mostly pictures and some other data.
How could i get an access to this data? I have already read about diffrent methods in the forums but mostly any of this methods would mean that all my data will be erased.
Do you know any similar threats or tutorials here?
I would be very thank full for any help. Because i wont to avoid the hardware based solution by removing the memory and try to get access to it afterwards.
francoooom said:
Hello!
Lets start with this. I have a big problem with my nexus s. A few day ago following problem occured. Everytime if i switch it on it seem to stuck in the booting mode. I can see the colored X on the display but the system wont start. I have stored some sensible and important data on the phone. Mostly pictures and some other data.
How could i get an access to this data? I have already read about diffrent methods in the forums but mostly any of this methods would mean that all my data will be erased.
Do you know any similar threats or tutorials here?
I would be very thank full for any help. Because i wont to avoid the hardware based solution by removing the memory and try to get access to it afterwards.
Click to expand...
Click to collapse
Pure stock?
Sent from my Nexus S using XDA Premium 4 mobile app
well..pictures and other media files are saved on the flash memory so it's not difficult to access to them.
if you already have a recovery you can access to memory by:
pwr+vol up > in fastboot select recovery with volume buttons and confirm with power.
once you get into recovery go to memory and storage> at the end of the list you find "mount usb storage">connect phone with usb to a pc and save img/photo and other things.
if you don't have it you can flash it, it won't compromise your data.
if you are looking a way to save data from apps such messages and other things similar, follow the procedure on developers.google.com to flash the rom but stop it before erasing the memory and re-flashing the rom; one time the same thing happens to a friend and this have "unlocked" the device so it have completed the boot and allow to save everything before flashing the new rom
hope this will be helpful..

Help very much appreciated (boot loop nexus 5)

Hello Everyone,
I have searched this forum and followed many useful threads which seemed related to my issue, alas none have actually been able to fix my phone.
I am using a stock ROM which upgraded to marshmallow not too long ago. The other day my phone rebooted for no reason got it's self into a boot loop. Since them I have tried the following:
1) I have used recovery mode and cleared the cache/performed a factory reset. I just the get the can't mount/cache line pop up.
2) Tried to use ADB to boot an image over the USB but couldn't get much from this (so I may have missed something with this).
3) Tried to use fastboot to move flash back to a version of marshmallow downloaded. When I go to flash files in I get failed messages on command prompt. (Failed, remote flash write error).
additional info
1) the device was encrypted from the settings menu when functional.
Any advice or help would be good at this point. Let me know if additional information is needed.
Thanks!

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