[APP][v1.8 (+US)] SGS3 Easy UMS - Mount external microSD card as USB mass storage

[leleobhz]

This app will make the external (not the internal!) microSD card of your Samsung Galaxy S3 (International, US versions, International LTE) available as USB mass storage device.

Also reported working on Galaxy Note 2, see compability list below.

Most important commands in this app:
http://xdaforums.com/showpost.php?p=27282116&postcount=58
http://xdaforums.com/showpost.php?p=28151372&postcount=133
http://xdaforums.com/showpost.php?p=28670285&postcount=1

Thanks d4fseeker :good:

:angel: If you like the app, please consider donating by buying this app or via PayPal (see link on the left, below username etc.) :good: Some people gave 1 star reviews to the app although I think I'm extremely clear with stating that this is only a donation app - but I can't change that


Compability

MODEL / ROM / KERNEL / APP VERSION / CONFIRMED BY

WORKING:
GT-I9305 (LTE) / ? / ? / 1.8 / Jarmezrocks
SGH-I317 (AT&T Note 2) / I317UCALJ2 / ? / 1.8 / dabuck
GT-N7100 (Intl Note 2) / ? / ? / 1.8 / geovass
GT-I9300 (International) / Stock (LFB) / Stock / 1.5 beta / woaloo
GT-I9300 (International) / CM10 / ? / 1.5beta / lubluchka
SGH-I535 (VZW) / ? / ? / 1.4beta / open1your1eyes0
SGH-T999 (T-Mobile US) / ? / ? / 1.4beta / gr4p3s
?

NOT WORKING:
?

I can only test it on my own GT-I9300; please report back your success with the information needed in the table above.

If you have a custom kernel, you have to make sure there is one of the three possible lun files available (see Problems section).

Regarding US versions: Starting with 1.4beta, it also works with US versions (see here). This may not be the case for all variants, so please report back with the information needed in the compability table.


Problems? Not working?
Report the exact problem, model/ROM/kernel/etc., the exact error message and the results of the following commands (use Terminal Emulator or something similar):

mount

ls /sys/devices/platform/s3c-usbgadget/gadget/lun0/file
ls /sys/devices/virtual/android_usb/android0/f_mass_storage/lun_ex/file
ls /sys/devices/virtual/android_usb/android0/f_mass_storage/lun/file

mount | sed 's/ on / /g' | grep extSdCard | cut -f 1 -d ' '

Note: Only ONE of the three ls commands must be successful (file exists)

You may need to replace "extSdCard" in the last command with the mount point name of your external sd card (e.g. external_sd or sdcard1 for CM10)

If the last command does fail, there is probably something wrong with your BusyBox installation. You should reinstall it - I recommend this app.

On some Win7 PCs, these steps may be needed:



Get the "extSdCard is being accessed by [...]" message? Wait until the app accessing the sd card has finished, stop it yourself or reboot.

Changelog

1.8
- added support for third lun file, should work with GT-I9305 (Intl LTE version) now

1.7
- fixed recognition failure if "mount" output contained "on" as the second column (e.g. Siyah kernels)

1.6
- fixed code so that it (hopefully!) works with recent CM10 versions again
- made some error messages clearer
- drop of "beta" name doesn't actually mean much by the way, but I think it looks a bit cleaner this way and does not make a difference

1.5beta
- added support for CM10 sd card paths (/mnt/external_sd and /mnt/sdcard1)

1.4beta
- added alternative method for users without s3c-usbgadget (may work on US versions)

v1.3beta
- rewrote the whole logic
- now opens Play Store entry of BusyBox if it is not yet installed
- notifies user if device seems to lack s3c-usbgadget module
- notifies user which apps are accessing the extSdCard
- generally better and more precise error messages

v1.2beta2
- added info about busybox requirement (maybe this will be removed later)
- added link to donation app

v1.2beta
- Automatically tries to unmount extSdCard before starting UMS mode. This will fail if some app is accessing it, so just wait or cancel that app if you know it and try again - possibly several times. This prevents the potential data loss with previous versions.
- It now checks the location of the extSdCard device. This should help with compabilty, e.g. for US versions.
- Added some log output and toasts (2s delay)
- Added link to this thread and version number in app
- It's a beta so please beware, but I think the worst probable thing that can happen is that it does not work (e.g. it does not start UMS if it cannot unmount the extSdCard).
- Dammit, the whole day is already over

v1.1
- Added option for going back to MTP

v1.0
- Initial release

Download
v1.8: http://dl.dropbox.com/u/22760184/android/sgs3-easy-ums/SGS3-Easy-UMS-v1.8.apk

v1.7: https://dl.dropbox.com/u/22760184/android/sgs3-easy-ums/SGS3-Easy-UMS-v1.7.apk

v1.6: https://dl.dropbox.com/u/22760184/android/sgs3-easy-ums/SGS3-Easy-UMS-v1.6.apk

v1.5beta: https://dl.dropbox.com/u/22760184/android/sgs3-easy-ums/SGS3-Easy-UMS-v1.5beta.apk

v1.4beta: https://dl.dropbox.com/u/22760184/android/sgs3-easy-ums/SGS3-Easy-UMS-v1.4beta.apk

v1.3beta: https://dl.dropbox.com/u/22760184/android/sgs3-easy-ums/SGS3-Easy-UMS-v1.3beta.apk

v1.2beta2:
https://dl.dropbox.com/u/22760184/android/SGS3_Easy_UMS_v1.2beta2.apk

v1.2beta: https://dl.dropbox.com/u/22760184/android/SGS3_Easy_UMS_v1.2beta.apk

v1.1: http://dl.dropbox.com/u/22760184/SGS3_Easy_UMS_v1.1.apk

v1.0: http://dl.dropbox.com/u/22760184/SGS3 Easy UMS.apk
(also, it's attached)

Credits: d4fseeker, Sakaschi, bazald, dAKirby309 (icon), RootTools devs

Uses RootTools project, which is made available by Stephen Erickson,
Chris Ravenscroft, Dominik Schuermann, Adam Shanks under Apache
License Version 2: http://www.apache.org/licenses/LICENSE-2.0

@Kopfgeldjaeger, For support OmniROM @T I9300:

root@m0:/ # mount | sed 's/ on / /g' | grep extSdCard | cut -f 1 -d ' '
130|root@m0:/ # mount | grep sd
/dev/block/vold/179:49 /mnt/media_rw/sdcard1 vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/fuse /storage/sdcard1 fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0

 

[GuyInDogSuit]

Would be nice if this worked on the S5... I bought a 128gb microSD card so I can play music through the USB port on my car stereo, but it does not support MTP.

 

[leleobhz]

Not Work Report

root@m0:/ # mount [7/250]
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,seclabel,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,seclabel,relatime,mode=600 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,seclabel,relatime 0 0
selinuxfs /sys/fs/selinux selinuxfs rw,relatime 0 0
none /sys/fs/cgroup tmpfs rw,seclabel,relatime,mode=750,gid=1000 0 0
/sys/kernel/debug /sys/kernel/debug debugfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/asec tmpfs rw,seclabel,relatime,mode=755,gid=1000 0 0
/dev/block/dm-0 /mnt/asec/com.maxmpz.audioplayer.unlock-1 ext4 ro,dirsync,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1 0 0
/dev/block/dm-1 /mnt/asec/org.kman.AquaMail.UnlockerMarket-1 ext4 ro,dirsync,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1 0 0
/dev/block/dm-2 /mnt/asec/polis.app.callrecorder.pro-1 ext4 ro,dirsync,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1 0 0
/dev/block/dm-3 /mnt/asec/com.mapmyrideplus.android2-2 ext4 ro,dirsync,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1 0 0
/dev/block/dm-4 /mnt/asec/com.nuance.swype.dtc-1 ext4 ro,dirsync,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1 0 0
/dev/block/dm-5 /mnt/asec/fm.a2d.s2-1 ext4 ro,dirsync,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1 0 0
/dev/block/dm-6 /mnt/asec/it.colucciweb.openvpn-1 ext4 ro,dirsync,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1 0 0
/dev/block/dm-7 /mnt/asec/com.quoord.tapatalkxdapre.activity-2 ext4 ro,dirsync,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1 0 0
tmpfs /mnt/obb tmpfs rw,seclabel,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/fuse tmpfs rw,seclabel,relatime,mode=775,gid=1000 0 0
/dev/block/mmcblk0p3 /efs ext4 rw,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1,journal_async_commit,data=ordered 0 0
/dev/block/mmcblk0p9 /system ext4 ro,seclabel,relatime,user_xattr,barrier=1,data=ordered 0 0
/dev/block/mmcblk0p8 /cache ext4 rw,seclabel,nosuid,nodev,noatime,errors=panic,user_xattr,barrier=1,journal_async_commit,data=ordered 0 0
/dev/block/mmcblk0p10 /preload ext4 rw,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1,journal_async_commit,data=ordered 0 0
/dev/block/mmcblk0p12 /data ext4 rw,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1,journal_async_commit,data=ordered,noauto_da_alloc,discard 0 0
/dev/fuse /mnt/shell/emulated fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
tmpfs /storage/emulated tmpfs rw,seclabel,nosuid,nodev,relatime,mode=050,gid=1028 0 0
/dev/block/vold/179:17 /mnt/media_rw/sdcard1 vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=cp437,iocharse
t=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/fuse /storage/sdcard1 fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
/dev/fuse /storage/emulated/0 fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
/dev/fuse /storage/emulated/0/Android/obb fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
/dev/fuse /storage/emulated/legacy fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
/dev/fuse /storage/emulated/legacy/Android/obb fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
root@m0:/ #
root@m0:/ # ls /sys/devices/platform/s3c-usbgadget/gadget/lun0/file
/sys/devices/platform/s3c-usbgadget/gadget/lun0/file
sb/android0/f_mass_storage/lun_ex/file <
/sys/devices/virtual/android_usb/android0/f_mass_storage/lun_ex/file: No such file or directory
usb/android0/f_mass_storage/lun/file <
/sys/devices/virtual/android_usb/android0/f_mass_storage/lun/file
root@m0:/ #
root@m0:/ # mount | sed 's/ on / /g' | grep extSdCard | cut -f 1 -d ' '
root@m0:/ # ^D
shell@m0:/ $ ^D

OmniROM. Kernel have support (DriveDroid works).

But i suspect the reason to not work is the DUMB way that OmniROM mount externalSd:

/dev/block/vold/179:17 /mnt/media_rw/sdcard1 vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0

/dev/fuse /storage/sdcard1 fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0

(Why fuse????)

---------- Post added at 07:02 PM ---------- Previous post was at 06:41 PM ----------

Note:

umount /mnt/media_rw/sdcard1
umount /storage/sdcard1
echo /dev/block/vold/179:17 > /sys/devices/platform/s3c-usbgadget/gadget/lun0/file

Worked like a glove.

 

[theonlyrick]

Not working on my Note3

does anyne know or can make this work on note 3

thanks

I've got a rooted, non-network Note 3 running stock, version 4.3

I just get "External card not mounted.... could not get path of external SD card. Maybe it's unmounted?"

Shame...

 

[yovesmlmt]

In galaxy s5 (G900F) don´t work. Rooted

 

[GuyInDogSuit]

In galaxy s5 (G900F) don´t work. Rooted

This has been mentioned, many times. The developer seems to have abandoned the thread and project altogether.

 

[yovesmlmt]

Thanks. I don't see

Enviado desde mi SM-G900F usando Tapatalk 2

 

[riahc3]

Is there a way to view the internal storage as mass storage as well? I imagine you have to be rooted...

 

[Joao Filho]

Not worked on mine

Excuse me if there is some answer I did not see, but I have 500MB or so free on my device and it points I have no free space for download. I used cache clear and it did not solve my problem. What should I do?
:crying::crying::crying:

 

[GuyInDogSuit]

Is there a way to view the internal storage as mass storage as well? I imagine you have to be rooted...

Unfortunately, no. All hopes of that died with this project.

Excuse me if there is some answer I did not see, but I have 500MB or so free on my device and it points I have no free space for download. I used cache clear and it did not solve my problem. What should I do?
:crying::crying::crying:

Reboot into recovery and clear cache and dalvik. Go into app settings, find the Play Store, and clear data, then give it another go.

 

[Joao Filho]

Unfortunately, no. All hopes of that died with this project.

Reboot into recovery and clear cache and dalvik. Go into app settings, find the Play Store, and clear data, then give it another go.

Did not work!

 

[GuyInDogSuit]

Did not work!

Don't know what to tell you. Try uninstalling an app and reinstalling it from the Play Store. That usually fixes it for me.

 

[zigar]

Samsung Galaxy Core 2

I would be very happy if you could support this phone...

Model name: Samsung Galaxy Core 2
Model number: SM-G355HN
Android version: 4.4.2
Kernel version: 3.10.17-2573481

u0_a118@kanas3gnfc:/ $ su
root@kanas3gnfc:/ # mount
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,seclabel,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,seclabel,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,seclabel,relatime 0 0
selinuxfs /sys/fs/selinux selinuxfs rw,relatime 0 0
debugfs /sys/kernel/debug debugfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
none /sys/fs/cgroup tmpfs rw,seclabel,relatime,mode=750,gid=1000 0 0
tmpfs /mnt/secure tmpfs rw,seclabel,relatime,mode=700 0 0
tmpfs /mnt/secure/asec tmpfs rw,seclabel,relatime,mode=700 0 0
tmpfs /mnt/asec tmpfs rw,seclabel,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,seclabel,relatime,mode=755,gid=1000 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/platform/sprd-sdhci.3/by-name/system /system ext4 ro,seclabel,noatime,data=ordered 0 0
/dev/block/platform/sprd-sdhci.3/by-name/userdata /data ext4 rw,seclabel,nosuid,nodev,noatime,discard,journal_checksum,journal_async_commit,noauto_da_alloc,data=ordered 0 0
/dev/block/platform/sprd-sdhci.3/by-name/CSC /cache ext4 rw,seclabel,nosuid,nodev,noatime,discard,journal_checksum,journal_async_commit,noauto_da_alloc,data=ordered 0 0
/dev/block/platform/sprd-sdhci.3/by-name/efs /efs ext4 rw,seclabel,nosuid,nodev,noatime,discard,journal_checksum,journal_async_commit,noauto_da_alloc,data=ordered 0 0
/data/media /mnt/shell/emulated sdcardfs rw,nosuid,nodev,relatime,uid=1023,gid=1023,derive=legacy,reserved=20MB 0 0
/dev/block/vold/179:129 /mnt/media_rw/extSdCard vfat rw,dirsync,nosuid,nodev,noexec,noatime,nodiratime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/block/vold/179:129 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,noatime,nodiratime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/mnt/media_rw/extSdCard /storage/extSdCard sdcardfs rw,nosuid,nodev,relatime,uid=1023,gid=1023,derive=unified 0 0

root@kanas3gnfc:/ # ls /sys/devices/platform/s3c-usbgadgdet/lun0/file
/sys/devices/platform/s3c-usbgadgdet/lun0/file: No such file or directory

root@kanas3gnfc:/ # ls /sys/devices/virtual/androroid_usb/android0/f_mass_st orage/lun_ex/file <
/sys/devices/virtual/android_usb/android0/f_mass_storage/lun_ex/file: No such file or directory

root@kanas3gnfc:/ # ls /sys/devices/virtual/androidoid_usb/android0/f_mass_stor age/lun/file <
/sys/devices/virtual/android_usb/android0/f_mass_storage/lun/file

root@kanas3gnfc:/ #

root@kanas3gnfc:/ # mount | sed 's/ on / /g' | grep eep extSdCard | cut -f 1 -d ' ' <
/dev/block/vold/179:129
/mnt/media_rw/extSdCard


Error message after pressing the UMS button:

Granted Easy UMS to get root permissions
extSdCard/external_sd/sdcard1 not mounted
Could not get path of external sd card (extSdCard/external_sd/sdcard1) Maybe it's unmounted?

 

[GuyInDogSuit]

I PMed the dev and even made a thread asking if anyone would continue this project or at least start something similar, but no luck on either count.

 

[Admin0389]

+1 for S5 support for this

 

[Old faithful]

I PMed the dev and even made a thread asking if anyone would continue this project or at least start something similar, but no luck on either count.

+1 on this from me as well. That such an fundamental, essential function of any computing system was removed from Android is to me sheer and utter madness, and must be fought at any cost.

File Management is a fundamental right like the right to be secure on one's property and I will never agree to give it away, and neither should anyone else.

I sure wish the source code for this app would be opened up by the developer so that others may be able to keep the flame burning so to speak, because once this light goes out, it's game over for user freedom.

 

[PIRATA!]

Any one knows if this will ever have a S5 Lollipop support??

Or is there out there an app that does it??

Tnx.

 

[ElenaXX]

+1 by my end too !!
It is a SHAME that such fundamental thing as UMS support was intentionally removed !
I just bought my new phone a Samsung J5 to discover almost suddently that MassStorage was not
supported. I'm almost going to change phone for an older one, or to keep my old HTC legend !

Please somebody keep this thread updated.
Btw, any chances that any such apps/scripts may work on my J5 too ?
I already flooded other Android forums aswell with the same question but apparently nobody wants to
help constructively
Unfortunately I'm not a developer but the idea that by some simple scripts I could enable UMS back on
my phone struggles me or almost... any comment is welcome !!!
Thanks.

 

[asdf2345]

Is there something like this for more modern Android phones?