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[Q] Samsung Galaxy S duos s7562

OP xpacguy

8th October 2012, 11:47 AM   |  #41  
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Thanks vikassaini01,
it is working.
8th October 2012, 12:47 PM   |  #42  
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Quote:
Originally Posted by tristone

Thanks vikassaini01,
it is working.

Thank you! But: I do / did use the latest drivers (exactly those) and the problem persists: When in Download-Mode, two drivers are attempted to be installed (showing MSM7x27 at first), but the installation fails and the device can not be activated, thus I can't connect Odin. I get "Samsung Mobile USB CDC Compatibility Device" in Devicemanager, but no "Android Phone" in Download Mode. It looks as though it gets the wrong driver. I tested this on two PCs, one had no previous installations of any Samsung Drivers. Same thing...

SOLUTION: I always rebooted to bootloader by adb reboot bootloader - now I managed to start as described with the devices buttons - and now the right driver is installed properly - Odin connects and everything went fine: GOT ROOT
Last edited by voom; 8th October 2012 at 01:25 PM.
8th October 2012, 01:20 PM   |  #43  
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guys just a suggestion as this phone is now widely available maybe we can ask for the mods to add a sub category in galaxy s forum for this device so we can start organizing

in case something goes wrong its always good to have a stock rom:

http://www.sammobile.com/firmware/?page=8&view=6815

http://www.hotfile.com/dl/174964833/...p.html?lang=en

---------- Post added at 02:20 PM ---------- Previous post was at 02:08 PM ----------

Quote:
Originally Posted by vikassaini01

ANYBODY WHO DOWNLOADED THIS RECOVERY.TAR, PLEASE REDOWNLOAD. THIS VERSION WORKS MUCH SMOOTHER.



Hi,
Press The following combination for booting into recovery. (Works fine for me)
Keep all of them pressed until you see the samsung logo and then release them all.

Vol. UP + Vol. Down + Home + Power On

CWM and Odin is attached. Flash this CWM package using odin (make sure you reboot your phone into download mode for using odin)

I'm NOT responsible for any brick or other mis-happening. I tested it all on my galaxy S duos and it works fine.


Just curious which version of CWM is attached
Last edited by aben.dc; 8th October 2012 at 01:13 PM. Reason: added some links
8th October 2012, 01:56 PM   |  #44  
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Quote:
Originally Posted by vikassaini01


....

Will this work with non-Indian StockROMs? Is the CWM you posted specific for India?
>> It should work because they all have the same hardware.

....

I'm not sure only one hardware version exists...

If you go to http://opensource.samsung.com and search for S7562 you will find 8 sofware images.
It seems they have different images for different regions, such as CHN (China) and TW (Taiwan). In addition to images for MEA, SEA and SWA (no idea what regions those are).

But it also lists a S7562I and a S7562L, which may be different HW versions. The 'I' version is perhaps India?
8th October 2012, 02:12 PM   |  #45  
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European model has Model number GT-S7562, baseband S7562XXLH5 and Build IMM76I.S7562XXALHB.

And the root works.
8th October 2012, 02:25 PM   |  #46  
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Thanks vikassaini01

I did the rooting and it worked. FYI my phone was bought in Germany.

I did however have to boot the phone quite a number of times until I finally managed to get into CWM to install SuperSU.

Now I can try to rid the phone of some of the preinstalled junk, and switch the sdcard and ExtSdCard mounts around.
8th October 2012, 02:35 PM   |  #47  
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Quote:
Originally Posted by robert__

Thanks vikassaini01

I did the rooting and it worked. FYI my phone was bought in Germany.

I did however have to boot the phone quite a number of times until I finally managed to get into CWM to install SuperSU.

Now I can try to rid the phone of some of the preinstalled junk, and switch the sdcard and ExtSdCard mounts around.

Let us know if you succees with the SD switch. I am planning to do it also but I am not sure if I will have time soon to play with that.
8th October 2012, 02:37 PM   |  #48  
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Quote:
Originally Posted by robert__

Thanks vikassaini01

I did the rooting and it worked. FYI my phone was bought in Germany.

I did however have to boot the phone quite a number of times until I finally managed to get into CWM to install SuperSU.

Now I can try to rid the phone of some of the preinstalled junk, and switch the sdcard and ExtSdCard mounts around.

Mine's also german I downloaded the german Stock FW from sammobile before trying to root, otherwise I would have waited for other people from Europe to successfully root this way first before experimenting with it.

Getting the bootoptions right with the buttons on the device really is a hassle. That's why I used adb in the first place, but then... (...the drawback I posted above...)

The S Duos has a curios setup with the storage-mounts. I am not quite sure if I understand that right. What are you expecting to achieve with the modifications you mention?
8th October 2012, 03:16 PM   |  #49  
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Hi voom,

It is easy to understand what you get by switching sd cards. You would be able then to install huge application , for example offline navigation software, which may not fit in those 1.8 GB of internal SD ( /sdcard ). Right now it is known problem for TomTom navigation which requires 3.3 GB on /sdcard and doesn't see that there is plenty of space on /mnt/extSdCard.

OT: I have phone bought in Czech Republic.
8th October 2012, 04:40 PM   |  #50  
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Quote:
Originally Posted by tristone

Hi voom,

It is easy to understand what you get by switching sd cards. You would be able then to install huge application , for example offline navigation software, which may not fit in those 1.8 GB of internal SD ( /sdcard ). Right now it is known problem for TomTom navigation which requires 3.3 GB on /sdcard and doesn't see that there is plenty of space on /mnt/extSdCard.

OT: I have phone bought in Czech Republic.

Indeed, that is the idea. After installing some fairly basic stuff, I only had ~1GB left which is insufficient for large apps like offline navigation.
However, you may find that the internal storage is quicker then the actual SD card, so you may want to check that you don't slow down your apps.

I installed busybox, and ran the following;

Code:
# time dd if=/dev/zero of=/mnt/sdcard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 9.128 secs (11487467 bytes/sec)
    0m9.18s real     0m0.00s user     0m1.07s system
# time dd if=/dev/zero of=/mnt/sdcard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 10.297 secs (10183315 bytes/sec)
    0m10.37s real     0m0.00s user     0m0.96s system
# time dd if=/dev/zero of=/mnt/sdcard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 9.370 secs (11190779 bytes/sec)
    0m9.54s real     0m0.00s user     0m1.00s system
# time dd if=/dev/zero of=/mnt/extSdCard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 17.478 secs (5999404 bytes/sec)
    0m17.83s real     0m0.00s user     0m1.38s system
# time dd if=/dev/zero of=/mnt/extSdCard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 11.267 secs (9306612 bytes/sec)
    0m11.73s real     0m0.01s user     0m1.45s system
# time dd if=/dev/zero of=/mnt/extSdCard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 12.553 secs (8353190 bytes/sec)
    0m12.85s real     0m0.00s user     0m1.54s system
This times the creation of a 100MB file, three times in a row. The MicroSD card is a 32GB SanDisk Ultra MicroSDHC UHS-I card, which is rated at up to 30MB/s read speed.
Now clearly I don't get anywhere near that, but writes are always slower. My actual write speed is between 5.72 and 8.87MB/s in the above test, while the performance of the internal flash memory was between 9.71 and 10.95MB/s.

SanDisk has faster memory, the "Extreme Pro", which is rated up to 95MB/s read and 90MB/s write (and only available up to 16GB in capacity). But looking at the performance numbers I suspect that this will not perform better as I think the bottleneck is the phone itself, and that it does not support the faster UHS speed classes and is limited to Class 10.

---------- Post added at 04:40 PM ---------- Previous post was at 04:25 PM ----------

And if anyone was wondering about read speeds of the same 100MB file

Internal memory
Code:
# time dd if=/mnt/sdcard/testfile of=/dev/null              
204800+0 records in
204800+0 records out
104857600 bytes transferred in 3.278 secs (31988285 bytes/sec)
    0m3.35s real     0m0.20s user     0m1.05s system
# time dd if=/mnt/sdcard/testfile of=/dev/null              
204800+0 records in
204800+0 records out
104857600 bytes transferred in 2.341 secs (44791798 bytes/sec)
    0m2.45s real     0m0.30s user     0m0.92s system
# time dd if=/mnt/sdcard/testfile of=/dev/null              
204800+0 records in
204800+0 records out
104857600 bytes transferred in 2.249 secs (46624099 bytes/sec)
    0m2.34s real     0m0.14s user     0m1.04s system
So here I'm getting a read speed of between 30.5 and 44.46MB/s

32GB SanDisk Ultra MicroSDHC UHF-I
Code:
# time dd if=/mnt/extSdCard/testfile of=/dev/null     
204800+0 records in
204800+0 records out
104857600 bytes transferred in 1.005 secs (104335920 bytes/sec)
    0m1.03s real     0m0.15s user     0m0.85s system
# time dd if=/mnt/extSdCard/testfile of=/dev/null           
204800+0 records in
204800+0 records out
104857600 bytes transferred in 0.996 secs (105278714 bytes/sec)
    0m1.01s real     0m0.18s user     0m0.81s system
# time dd if=/mnt/extSdCard/testfile of=/dev/null           
204800+0 records in
204800+0 records out
104857600 bytes transferred in 1.004 secs (104439840 bytes/sec)
    0m1.01s real     0m0.16s user     0m0.84s system
These numbers are incredibly quick, between 99.5 and 100.4MB/s. Which either means that the operation is being cached in memory, or the phone does support UHS-I.

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