Author Topic: JXD S7800b - some questions  (Read 9955 times)

nicole ridgway (OP)

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JXD S7800b - some questions
« on: January 08, 2014, 05:21:31 pm »
Hello people, cheers from Italy!
I would like you to ask something. My JXD S7800b has just arrived but I suppose the people from willgoo sent me a S7800A.
How cain I reckon the original 1.6 Ghz Rockchip processor ?
I would also like to know if there's a way to root the device...please let me know
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JXD S7800b Utilities driver

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skelton

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Re: JXD S7800b - some questions
« Reply #1 on: January 08, 2014, 05:30:34 pm »
Just go to settings/about tablet, and it should say if it is a s7800A or s7800b. Or install an app like CPU-Z
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Drem

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Re: JXD S7800b - some questions
« Reply #2 on: January 08, 2014, 05:32:11 pm »
Check your device's specs in CPU-Z:
https://play.google.com/store/apps/details?id=com.cpuid.cpu_z
S7800A has A31s Allwinner CPU (1.0 GHz) and 1 GB of RAM, while S7800b has Rockchip RK3188 (1.4 GHz or 1.6 GHz) and 2 GB of RAM. RK3188 1.6 GHz are "early birds", RK3188 1.4 GHz - standart post-November units.
S7800A is device that significantly harder to get.
All S7800 units comes pre-rooted. Just update your to the latest official firmware:
http://www.jxd.cc/download.asp?id=391&selectclassid=019009
Just unzip "update.img" file and put in installed SD card. System will ask you if you want to upgrade.
« Last Edit: January 08, 2014, 05:33:54 pm by Drem »
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skelton

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Re: JXD S7800b - some questions
« Reply #3 on: January 08, 2014, 05:43:11 pm »
Those people with a 1,4 ghz device, I would personally open a device to see if JXD has put a RK3188-T inside instead of a standard 3188. Some companies are doing this.
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acid

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Re: JXD S7800b - some questions
« Reply #4 on: January 08, 2014, 06:07:01 pm »
Quote from: skelton on January 08, 2014, 05:43:11 pm
Those people with a 1,4 ghz device, I would personally open a device to see if JXD has put a RK3188-T inside instead of a standard 3188. Some companies are doing this.

What's the difference between the RK3188t and the regular version? I searched online but couldn't find anything concrete. People seem to think it's a cheaper version of the RK3188 but doesn't seem like there's any official information on that soc.
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skelton

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Re: JXD S7800b - some questions
« Reply #5 on: January 08, 2014, 06:37:06 pm »
It is a cheaper version. Locked at 1,4 ghz by default, and unable to use retina displays. Any case, I think 1,4 ghz or 1,6 ghz is practically the same. I use some RK3188 devices at just 1,2 ghz, and it's enough for emulation.
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Joe Sixpack

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Re: JXD S7800b - some questions
« Reply #6 on: January 08, 2014, 07:09:28 pm »
Anyway to identify the SoC without physically checking? Or do they both identify as the same?

I know they are revision r3p0 in cpuz, both early 1.6 units as well as the newer 1.4's

It seems quite likely that's what they've done then.. or it's quite a coincident.
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Kev7112001

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Re: JXD S7800b - some questions
« Reply #7 on: January 08, 2014, 07:24:25 pm »
well if they dont like 1800 then i got 1 as mine wont do 1800 will be adding  heatsinks to the back see if the helps no room on the front sad as all that extra room on the back
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skelton

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Re: JXD S7800b - some questions
« Reply #8 on: January 08, 2014, 07:58:57 pm »
Quote from: Joe Sixpack on January 08, 2014, 07:09:28 pm
Anyway to identify the SoC without physically checking? Or do they both identify as the same?

I know they are revision r3p0 in cpuz, both early 1.6 units as well as the newer 1.4's

It seems quite likely that's what they've done then.. or it's quite a coincident.

They are identified the same, so phisically is the only way to know it, r3p0 is Mali driver version.
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nicole ridgway (OP)

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Re: JXD S7800b - some questions
« Reply #9 on: January 08, 2014, 11:12:13 pm »
Thanks everybody for all the answers...well I suppose it is a post november unit:
it is already updated to the last firmware, the build number is S7800-b-01-V1.1.4-20131107.224619.
CPU-Z returns these values:
ARM Cortex-A9, 4 cores, r3p0 revision, clock speed 312 mhz to 1,42 ghz, GPU vendor ARM, Gpu Renderer Mali-400Mp.
I'll post a screen as soon as I can
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nicole ridgway (OP)

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Re: JXD S7800b - some questions
« Reply #10 on: January 09, 2014, 08:54:45 pm »
Hello people...just a couple of questions...should I upgrade the firmware / change ROM with something else?
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Volcano

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Re: JXD S7800b - some questions
« Reply #11 on: January 10, 2014, 07:19:36 am »
yes flash Supercharged (currently version 2.2.1).. AT YOUR OWN RISK.

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S7800B. Webclaw

nicole ridgway (OP)

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Re: JXD S7800b - some questions
« Reply #12 on: January 10, 2014, 11:53:09 am »
Is it FULLY working with PlayStore and other apps?
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JXD S7800b Utilities driver

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Timber

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Re: JXD S7800b - some questions
« Reply #13 on: January 10, 2014, 12:06:19 pm »
More so than the Stock rom. TANs rom makes your device compatible with all playstore apps, as it masks the JXD as a Samsung GT-N7100
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LooZee

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Re: JXD S7800b - some questions
« Reply #14 on: March 30, 2014, 03:38:34 pm »
Quote from: nicole ridgway on January 08, 2014, 11:12:13 pm
it is already updated to the last firmware, the build number is S7800-b-01-V1.1.4-20131107.224619.

The unit I received yesterday has the same build and CPU-Z identifies it as Rockchip RK3066 running at 1,42GHz and 2GB RAM. That's a bit strange, because I believed the S7800B features the RK3188.
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nicole ridgway (OP)

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Re: JXD S7800b - some questions
« Reply #15 on: March 30, 2014, 04:41:33 pm »
LooZee that sounds really weird. try to take a look in here:

http://boards.dingoonity.org/jxd-devices/s7800b-1-6ghz-(tweaked-vsync-fix)-minimal-rom-wother-fixes-(by-webclaw)/300/

Quote from: jcelis on March 25, 2014, 11:49:55 pm
hello friends leave this application that detects 3188 & 3188-T unit JXD your s7800b
download
http://www.freaktab.com/attachment.php?attachmentid=5403&d=1392656453

Quote from: WebClaw on March 26, 2014, 12:03:35 am
Only way to properly identify is via dmesg via SSH:

Here is T series:

<4>[    4.352416] Mali: Mali400 inside of rk3188!
<4>[    4.352453] Mali: mali freq table num : 6
<4>[    4.352478] Mali: mali freq table :Mali: 128,Mali: 179,Mali: 223,Mali: 297,Mali: 297,Mali: 446,Mali:
<4>[    4.352546] Mali: init mali clock success
<4>[    4.357967] Mali: @@@@@@@Mali device driver loaded [email protected]@@@@@@@

Anything else, for example 59XMHz is non-T series.

try to read also here:

http://boards.dingoonity.org/jxd-devices/s7800b-1-6ghz-(tweaked-vsync-fix)-minimal-rom-wother-fixes-(by-webclaw)/315/

Quote from: Volcano on March 27, 2014, 02:40:27 am

download android terminal emulator from playstore
open it
type su
now type dmesg
a shitload of pages come up, now look at the code.

you can also do this via your ocmputer but you gotta google how to ADB
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JXD S7800b Utilities driver

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Joe Sixpack

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Re: JXD S7800b - some questions
« Reply #16 on: March 30, 2014, 04:59:02 pm »
I just checked my October unit also reads out as 3066 on CPUZ.
I would'nt worry to much, I believe they're related, and people have already taken their units apart and verified they use 3188's

CPUZ probably just can't tell the difference.
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LooZee

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Re: JXD S7800b - some questions
« Reply #17 on: March 30, 2014, 05:24:57 pm »
Thanks for your replies.

CheckRK3188 says "Device seems to be a real RK3188".
CPU-Z may have a bug or the chipset identifiers are ambigous or something.
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