[APP] USB Mass Storage for Samsung Galaxy SIII Mini

[f_ranek]

Hi everyone!

I was looking around for an app that could share my SD card with a computer via USB Mass Storage protocol, but no success. There were apps for other phones, but they didn't work for my phone :/ So I've created something for my own, and I hope it will work for your phones too. My app works only for external SD card.

REQUIREMENTS
* Rooted Samsung Galaxy SIII Mini (GT-i8190). This app may work for other devices too, but I can not guarantee that.
I have tested it against:
* Android 4.1.2, firmware JZO54K.I8190XXAMD3
* Windows XP SP3
* Windows 7 64-bit

Not working on:
* CM 10.1

KNOWN ISSUES
* USB PC Connection will still display MTP/PTP mode, even if the mode is Mass Storage. I could fix that issue, but this will require permanent configuration changes, which I would like to avoid.
* Other USB modes (especially ADB) are disabled during UMS mode. This can not be overcome.

USAGE
* Launch the application, click Enable UMS. This will unmount your external SD card from the device, and when the card is unmounted, app will switch USB mode. You should see two new drives appearing in My Computer window. On the second one, your SD card data should appear.
* When you are done, eject (unmount) the drive in Windows.
* Click Disable UMS. This will switch USB to the state it was before enabling UMS, so MTP/PTP mode, as well as ADB will be back. Then, your SD card will be mounted in the phone. An MTP Application prompt may appear, asking to restart MPT application. You may answer what you wish

IMPORTANT NOTES
* Never mount SD card in the phone (Settings->Storage->Mount SD card) while it is shared with a computer. This will cause the card filesystem to be mounted concurrently by two operating systems, and for sure cause data lost.
* Always eject (unmount) the card from a computer before disabling UMS.
* It seems that results (especially glitches and hangs) vary depending on the SD card you are using. See this post by myself.

HELP, THERE'S SOMETHING WENT WRONG
* You may restart your phone. The app does not make any permanent configuration changes, so it's the safest option.
* Restart your computer.
* Unplug and replug USB cable.
* You may try to disable USB, wait for several seconds, then either enable it again, or from the system USB PC connection app, change the mode to PTP, and back to MTP. Be patient, and wait before performing next operation.
* Be patient. From time to time, the computer takes a lot of time to detect device going back from UMS to MTP/ADB.
* App not working. Describe the symptoms (app crash, phone crash, computer crash, nothing changes, etc), your device details (operating system version and build) and attach logcat (adb logcat -d -v long > filename.txt) logs.

P.S.
I would kindly ask moderators to move this thread to the appropriate subforum, if it is already not. Since I'm newbie, I can not post to Developer's forum. Thanks

 

[burak185]

404 Error. Please upload again

 

[sasa g]

404 Error. Please upload again

+1

 

[f_ranek]

404 Error. Please upload again

There's something strange going on...
Please find attached app, I hope it will download

Edit: Still 404, since I can not paste external links (newbie), try http colon slash slash bogus.ovh.org slash UMSShare.apk

 

[sasa g]

I tried UMS on XP and W7 but he did not work for me.When I want copy something, he says "copy..." and nothing happens.

 

[f_ranek]

I tried UMS on XP and W7 but he did not work for me.When I want copy something, he says "copy..." and nothing happens.

Do you copy from the SD card, or to the SD card?
If you copy from, have you tried opening some files directly from the SD card? Do they open?
If you copy to the SD card, did you unmount it in Windows before disabling UMS?

I have just tried copying in both directions, and files do copy properly.

 

[orwell 1950]

Hi f_ranek

App is working well, but hungs PC copying from PC to SD and vice versa with files more than 690 Mb, hope you could fix it, it will be very usefull, well known advantages from ums mode.

Thanks for your job.

 

[Chameleon.]

Do not go on CM10

"Unfortunately the application was closed"

 

[sasa g]

Do you copy from the SD card, or to the SD card?
If you copy from, have you tried opening some files directly from the SD card? Do they open?
If you copy to the SD card, did you unmount it in Windows before disabling UMS?

I have just tried copying in both directions, and files do copy properly.

From PC to SD card. PC says "copy...." and nothing happens.
Thanks

 

[f_ranek]

App is working well, but hungs PC copying from PC to SD and vice versa with files more than 690 Mb

From PC to SD card. PC says "copy...." and nothing happens.

Actually, there seem to be some timeout issues. For instance, first I tried copying big files, and it seemed that everything hung, with strange Windows messages. So I disconnected USB cable, disabled and reenabled USM mode, and replugged USB. Then, I copied 40 MB to my SD card, but before the copying starts, I had to wait for a quite long time (about 30-60 seconds). But, surprisingly, after copying that 40 MB file, I have copied 80 MB file, 200 MB file and 700 MB file without any troubles and additional waiting! And they play well on the device. For your record: I was using Win XP SP3, and Total Commander 6.53. Tomorrow I'll try on Win7 64bit.

I'll try to tune a little the configuration, but have no idea if this will change something.

 

[f_ranek]

Do not go on CM10
"Unfortunately the application was closed"

First of all, you are using quite unsupported by operating system. CM is Android, but is very different from the stock one, that device manufacturers put on their devices. Now, I have no plans for supporting CM - maybe find an app dedicated for CM, or ask CM developers to put back UMS mode natively, without any hacks. Because yes, UMS is still there, but hidden in UI, and all that UMS apps are doing is just guessing where and how, and hacking your OS.

Second, if you are using CM, it means that you are quite powerfull user. And I hope can read with understanding to install CM. So please read my post, and attach logcat (adb logcat -d -v long > filename.txt) logs. Sorry for my irony, but if you want to get help, you must first make a little effort.

 

[Chameleon.]

First of all, you are using quite unsupported by operating system. CM is Android, but is very different from the stock one, that device manufacturers put on their devices. Now, I have no plans for supporting CM - maybe find an app dedicated for CM, or ask CM developers to put back UMS mode natively, without any hacks. Because yes, UMS is still there, but hidden in UI, and all that UMS apps are doing is just guessing where and how, and hacking your OS.

Second, if you are using CM, it means that you are quite powerfull user. And I hope can read with understanding to install CM. So please read my post, and attach logcat (adb logcat -d -v long > filename.txt) logs. Sorry for my irony, but if you want to get help, you must first make a little effort.

Thank you very much, inadvertently, this application works on 4.1.2 original stock

 

[f_ranek]

Hi everybody!

Recently I did some test with Windows 7 64 bit. The tests were performed on fresh system (the phone was plugged for the first time), the phone was plugged directly (no USB Hub down the line), and I've always switched to UMS before plugging the cable.

If you don't want to read such a long post, skip to the emboldened bottom line.

First, I've tested my regular SD card, 2 GBs labeled Kingston. I've copied 1 GB of files from the SD card to the computer, without any trouble and at average speed of 14 MB/s. Then I wanted to delete those files. After selecting them, and hitting Shift-Delete, I got delete progress dialog, which hung up leaving 1 file (out of 6) undeleted. At this point, access to SD card seemed to hung. I was unable to cancel the operation and close the dialog, as well as refreshing of the My Computer window took significant period of time. So I decided to unplug the USB, and replug it again. After that I noticed, that the files I wanted to delete are gone. Then, I copied back 700 MB file to the SD card. The copying avg speed was 3-4 MB/s, and the CPU utilization window (see here: http://forum.xda-developers.com/showthread.php?t=1495763) showed big blue bar.

Second, I replaced the SD card with another 2 GBs, labeled Japan. Then I copied 3 files (40 + 80 + 30 MB - no more space available, and no unnecessary files to delete) to the card. The copying was smooth, with little glitches before or after each file copying. The avg speed was 10-12 MB/s, and the device haven't indicate increase CPU load (neither green nor red or blue bars). Then, I tried deleting several files in a row from a directory, still without any glitches.

Edit: testing now, on Win XP, and through USB hub (does it matter?) does not work so perfectly well :/ I got one hang during folders deletion, and quite a long glitch before copying of several folders started.

Third, unlabeled 2 GB card sold (probably) with Nokia 6303i. First, I wanted to browse file system on the device. The performance was really bad, I was only reading files and traversing directories. Suddenly, all the file names changed to random characters (no writes performed by myself), and the phone indicated file system error, and unmounted the card. When I tried to share it with PC, windows said that the card is not formatted. The same phone, when trying to mount it back. The card can't be read neither on Nokia 6300.

Last, but not least - unlabeled 128 MB card got with my Nokia 6300 back in 2008. The phone indicated unformatted card, or unsupported file system. The same with Windows 7 accessing it with UMS, and Windows XP accessing it from the SD card reader. But, the card can be still read by my Nokia 6300, however, it's name is a little crapped. Moreover, I can access it from Windows XP using that Nokia in UMS mode!

So, the bottom line is
everything seems to depend on the SD card you are using.

Another story: the same micro SD card accessed via UMS in Nokia 6300 - very good performance, accessed via SD card reader with micro SD adapter - terribly bad performance. Another SD card accessed via the same SD card reader - very good performance. So as you can see, the same SD card, different reading devices - different effect. The same reading device, different cards - different effect.

 

[Kobro]

Im not able to install on stock 4.1.2 i get problem parsing the package