Dingoonity.org

Current Version: 1.02 w/over 5000+ downloads:

This is a minimal tweaked 1.6GHz ROM - (soft-brick free) for all known JXD S7800B devices.
1.1.4 Base @ 1.6GHz (all S7800B devices - including the initial batch of 1200MHz units).

Clock / Performance Settings:
1.6GHz Max CPU 300Mhz Min CPU
533Mhz Max GPU (req. webclaw-boot.img) 50MHz Min GPU

As of 1.0.2, the default 1GB userdata (aka: data) partition changed to 2GB to allow for more applications to be installed.

This custom ROM scores ~19488 w/TuTu benchmark.

Download v1.02:
http://www.cloudstor.es/file/m1_OTMyNA/

Code: [Select]

File: webclaw1-02.img
CRC-32: 94967231
MD4: 8c76ca324e714e2840681e442bccfceb
MD5: 60d9674f05ffda94d8cf3c6411777fc6
SHA-1: 4f84260f47171eed75acea10372f6cf58cd78ec8


CPU Speeds Table / Freq:
MHz     mV
312     925
504     950
816     1000
1008    1075
1200    1200
1416    1250
1608    1350

Battery Life:
1.6GHz Battery Life 6.6 Hours (StressFree 12)
1.4GHz Battery Life 6.8 Hours (StressFree 12)

Customizations / Fixes:
Root has been fixed and SU binary has been updated.
Updated drivers (video and wifi) in {webclaw-boot.img} - thanks to JXD support.

Compiled with SDK and http://malideveloper.arm.com/develop-for-mali/drivers/open-source-mali-gpus-linux-kernel-device-drivers/

This is a minimal ROM release, I have removed the applications that have no business being installed by default or those that didn't work (however those to keep the GUI working remain - eg: Phone.apk).

Packages Excluded:
BooksProvider.apk
Chrome.apk
ChromeBookmarksSyncAdapter.apk
Galaxy4.apk
Gmail.apk
HoloSpiralWallpaper.apk
MagicSmokeWallpapers.apk
OpenWnn.apk
PhaseBeam.apk
PinyinIME.apk
RkApkinstaller.apk
RKEBookReader.apk
RkExplorer.apk
SuperSU.apk
Talk.apk
WifiDisplay.apk
KeyMappingUpdater.apk
Mms.apk
GoogleEars.apk
(+anything else illegal)

Known Issues:
vSync and HDMI still has the frame drop issues (address mark in the kernel is not the same). Problem cannot be fixed on JXD S7800B units until JXD releases the kernel source (or releases a new kernel.img).

Installation:
1. Download Rockchip Batch Tool 1.7: http://www.cloudstor.es/file/m1_OTM0OA/
2. Connect your S7800B to your computer via USB 2.0 (avoid USB 3.0 ports).
3. Power up your device and run the file RKBatchTool.exe (requires administrator) on your computer.
4. You'll note the tool shows a pink color indicating the status (device is connected).
5. Click the "Switch" button and your device will reboot. Install drivers via Device Manager.
6. Press the "Reset" button your device, wait for it to boot up.
7. Again, click the "Switch" button, this time the area above will turn green - programming mode ready (if it doesn't you didn't install the driver).
8. Select the desired flash image file (.img) and press "Restore".

Remember to backup /data prior to flashing should you want to keep those save-games ;-)

RAM OC Note:
I've been asked why the RAM was not overclocked. I have created 720MHz versions and 667MHz versions - both of which actually slow down the unit causing poor benchmark / performance. RAM needs to be timed to the GPU - changing this timing actually does the opposite of what you would think it would do.

No. Wouldn't be much point to reposting that.

Maybe I am just sick or something but is this official as in from JXD?

Oh I can't decide whether to keep tan's which is working great or try this out. It's cool we have options though.

Will this have a better battery indicator?

A few friends and I wrote a program that would test the life of the battery if Pi (taken from SuperPi) was calculated. The idea here was to determine the battery draw. In any regard, we tested at 1.8GHz, 1.6GHz, and 1.4GHz. 1.8GHz was not stable and killed the battery much faster than expected - so we defaulted to the 1.6GHz. Battery life between 1.4GHz and 1.6GHz was nil.

And no, this is not the 1.6GHz firmware released by JXD - we simply contacted them to help us out on a few things which his why their name was referred. I am well aware of the stock 1.6GHz release.

You can install any aftermarket software you want, that said the governors are set in the .conf and not by a GUI like SetCPU. You can install SetCPU if you want; however the goal was a 1.6GHz released with some small tweaks in a minimalist package - hence the file size reduction.

Base was 1.1.6 - as stated in my post.
36000,54000,72000,126000,144000,294000,364500,500000,600000,720000, etc. You can review system.img if you want to take a peek.
/sys/devices/system/cpu/* (just cp or rename the freq you want to test).

Yes voltage bump - I don't use Tan's ROM's so I can't speak for him / methods. I was involved with another s7800b project.

mali and wifi have been updated (which I assume TAN also did as per his post)

The Mali driver fix the vsync frame drop issue on video's?

I think it means he overclocked the Mali to 600mhz like Tan did. It would be great to have that frame-drop bug fixed though.

Is it finished uploading yet?

1.0.9 = Base for 1.1.4 without CPU freq mods or voltage edits).
1.0.9 = Base for 1.1.6 with CPU (freq mods and voltage edits) with 1.1.4 root fix.
1.1.6 = Fixed root issue (later fixed in 1.0.9 unofficial) with 1.1.4.

So 1.0.9 (with fixed root) is not the base for 1.1.6 (unless JXD just specifically addressed this problem which they didn't as it's missing a SU binary).

I am uploading at work now, @home was too slow.

A few friends and I wrote a program that would test the life of the battery if Pi (taken from SuperPi) was calculated. The idea here was to determine the battery draw. In any regard, we tested at 1.8GHz, 1.6GHz, and 1.4GHz. 1.8GHz was not stable and killed the battery much faster than expected - so we defaulted to the 1.6GHz. Battery life between 1.4GHz and 1.6GHz was nil.

And no, this is not the 1.6GHz firmware released by JXD - we simply contacted them to help us out on a few things which his why their name was referred. I am well aware of the stock 1.6GHz release.

You can install any aftermarket software you want, that said the governors are set in the .conf and not by a GUI like SetCPU. You can install SetCPU if you want; however the goal was a 1.6GHz released with some small tweaks in a minimalist package - hence the file size reduction.

Sorry for my ingnorance, but I do not get it. I mean, if governors are set in .conf, does that mean thet we must edit the file to change governors? Is it not better to allow the use of SetCPU, that is easier and allows profiles and so on? I mean, if I want change from "conservative" to "on demand" (for example), must I edit the .conf?

I clearly didn't explain very well.

The values in the .conf files are by default statically set. Your more than welcome to use SetCPU (or any other program that does the same thing) to change the governors at will. As previously mentioned the set CPU speed in this image is 1.6GHz with the same voltages provided by JXD (with the exception of the CPU and DDR - hence the 533GHz GPU clock vs. the stock underclock).

The goal of this package was to define a profile that would be consistently used. Power users (or those familiar with SetCPU) can go nuts and configure as needed (it's just a pretty GUI for the files anyway). I did not include SetCPU in the image for this reason. If SetCPU is loaded you can change the governors  and frequencies within the set range as indicated in the .conf and patched kernel.

Hope that makes more sense.

@mitcher78, I complete agree. The GPU is really the slowdown on the S7800B and not the CPU. The MALI 400 is an older processor despite their efforts to simply throw more cores into it.