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Violating my JooJoo's warranty

I posted this over on Android Central but thought I'd give xda a shot as well. I'm looking to violate my joojoo's warranty and get rid of that horrible OS it has. That was the plan all along when buying it so I knew I was getting into some potential loss of $$$
I think it will be really nice with Android. I'm also thinking about giving Windows Embedded 7 a shot
Here is what I know so far about it:
Info from hack-a-day
Basic hardware is 1GB ram (1 slot)
2 mini PCIE slots
1 SSD (4gb)
3g sim slot (no card in it, want to put one in it)
Nvidia ION
Atom n270
Bluetooth
WiFi
Camera
Info from my tear down:
Processor: Atom N270 processor, ION-GPU
Hard Disk: Silicon Power Mini PCI-E Solid State 4 GB
Part Numbers:
25SH6-0004 G3 535
SP00 4GBSSD j 5 0MFF-G3
1002Sk0592
Network: Mini-PCI-E (slot 1)
Part Numbers:
1C4BD6B7DC0B
S/N: 011J053983
RAM: Hynix SODIM
1GB 2Rx16 PC3-8500S-7-10-A1
Open Mini PCI-E (slot 2)
Possible Display Driver: EETI connects to ribbon labled UNIDISPLAY that goes to screen area
USB/Power switch/Light Sensor
Part number: AH4U57 00193
Camera: Part 51141003 200 385 0A A
Misc
Motherboard has LPC80H on it. Not sure what this is
On motherboard there is a chip near sound ports with ALC289 on it. Guessing this is sound
Ordering a new SSD for playing with. Thinking 16 gig
Ordering more RAM. Thinking 4 gig
Can anyone help track down a the network card and what kind of chipset it has? I'm not very good at taking a serial number and finding the manufacturer.
Also with that mini sata/pci-e slot (looks just like the mini sata slots) do you think I could get a 2.5" laptop drive to run for my testing purposes?
Finally does anyone know if pulling this SSD will make it lose it's data? Is it DRAM based?

So once I get the hardware specs all set then my next step is actually installing/building an Android ROM. This is where I'm going to get pretty fuzzy. I've read the Android porting site, I'm comfortable with linux and some development but I've never done this before.
Who would be able to help guide me in the right directions?

porting android over to a brand new device is almost impossible (at the very least) e.g. drivers for your wifi card would have to be somehow made compatible which i believe is difficult. Otherwise we could easily build android for all devices.

Optimus 3D Defect?!

my Hardware Info Apps shows me, that my lpg920 has
441 Mb System RAM. Shouldnt it 512Mb??

Im pretty sure this is because of the rest being restricted or reserved for the things like the actual phone for calls and texts and the essentials so that way it wont get auto killed and stop phone working .. its the same with any phone now like my nexus said 371mb instead of 512 so 441 is alot for a 512mb phone

Hmm it says: 441Mb Ram, 137Mb in use, 304 free..

I would imagine its the GPU etc, I recall on the the GS2 had 1 gig in specs but only had 800 odd meg total.
I don't know how you have so much free mind, I have never had more than 180 free on this and that's on a fresh install.

Yeah its the same as the old pc setup where you have shared ram, so 512mb becomes 441mb of system ram and 71mb of graphics memory but remember that there are TWO 512mb chips in the phone so actually you have physically 142mb of graphics ram and and 882mb of system ram but these are halfed down to create the really fast dual channel system.
Sent from my LG-P920 using XDA Premium App

hefonthefjords said:
Yeah its the same as the old pc setup where you have shared ram, so 512mb becomes 441mb of system ram and 71mb of graphics memory but remember that there are TWO 512mb chips in the phone so actually you have physically 142mb of graphics ram and and 882mb of system ram but these are halfed down to create the really fast dual channel system.
Sent from my LG-P920 using XDA Premium App
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If it has 2x512mb chips they should have just made it with 1gb of on board ram and forgot the dual channel memory as it doesn't make any noticeable difference having it over the GS2 with its single channel.

hefonthefjords said:
Yeah its the same as the old pc setup where you have shared ram, so 512mb becomes 441mb of system ram and 71mb of graphics memory but remember that there are TWO 512mb chips in the phone so actually you have physically 142mb of graphics ram and and 882mb of system ram but these are halfed down to create the really fast dual channel system.
Sent from my LG-P920 using XDA Premium App
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That is totally not how dual channel works, if it has 2x512MB you would have usable 1GB.
Dual channel memory is basically like striping on a RAID hard drive array. It interleaves data between the two channels so that while one channel is busy it can read/write the next piece of data to the other channel. It slightly reduces the time the system is left waiting for RAM to be ready for access.
Its exactly the same as dual channel on a PC, its just phones were not really fast enough to bother doing it on until now. However as such its not the holy grail, as if you need to access data already in RAM you still need to access the RAM chip its actually stored on which might just be on the channel currently being used. It just means due to the interleaving once you start reading back its likely to be spread across both banks so can utilise both channels. Lets not forget, its still only supposed to be something like a 10% increase in performance on PC and I expect nothing more here either.
What you are describing is like mirroring and would make no sense, as it would only speed up reading back data when RAM needs to be equally fast reading and writing.
Arguably though, we would get a much better speed boost from using better FLASH memory than dual-channel RAM. Lag in all computing devices is primarily IO waits, its why even the O3D stalls when installing apps.
Its bizarre we are running the OS from chips doing 5-20MB/s when there are SSDs capable of 550MB/s now.

i think 2*256 modules

Alex Atkin UK said:
That is totally not how dual channel works, if it has 2x512MB you would have usable 1GB.
Dual channel memory is basically like striping on a RAID hard drive array. It interleaves data between the two channels so that while one channel is busy it can read/write the next piece of data to the other channel. It slightly reduces the time the system is left waiting for RAM to be ready for access.
Its exactly the same as dual channel on a PC, its just phones were not really fast enough to bother doing it on until now. However as such its not the holy grail, as if you need to access data already in RAM you still need to access the RAM chip its actually stored on which might just be on the channel currently being used. It just means due to the interleaving once you start reading back its likely to be spread across both banks so can utilise both channels. Lets not forget, its still only supposed to be something like a 10% increase in performance on PC and I expect nothing more here either.
What you are describing is like mirroring and would make no sense, as it would only speed up reading back data when RAM needs to be equally fast reading and writing.
Arguably though, we would get a much better speed boost from using better FLASH memory than dual-channel RAM. Lag in all computing devices is primarily IO waits, its why even the O3D stalls when installing apps.
Its bizarre we are running the OS from chips doing 5-20MB/s when there are SSDs capable of 550MB/s now.
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the discussion is not about dual channel memory. i know fine well how 64bit memory addressing works. the discussion is about MEMORY ALLOCATION in a dual ram system. dual ram implies that there is mirroring happening but obviously i can't say that for sure as i havent ripped apart my shiny new phone to examine it.
i think the reason the chips are cheap is literally because they are cheap. also dedicated flash drives have dedicated storage controllers and what amounts to unlimited supply of DC to hammer all that data in and out with. these sorts of things aren't feasible on a device this size. bear in mind that the entire computational system in this device is crammed onto a 2 inch by 1 inch pcb and basically everything, calculation and processing wise, is taken care of by tiddly processors with only milliamps or even microamps of power shared between them, built by the cheapest bidder with the cheapest parts.

64bit memory allocation is in no way related to dual memory or dual channel Memory.
Alex was totally right about the concept of Dual Channel and that same concept is implemented in the O3D. The Tri-Dual concept created by LG states the phone has dual core, dual channel, dual memory. The only way to achieve dual channel is by having dual memory as you need two strips of memory for it to work. Every other phone that has 512MB will have either a single 512MB chip or two 256 chips working in single channel. In the case of the O3D the Dual Memory is just a marketing term, the phone has two (or "dual") 256MB DDR2 modules which work in dual channel.
No mirroring, no 2x512MB memory, just a basic dual channel setup which you'll find in any relatively modern pc. Put two strips of 2GB DDR1/2/3 in any dual channel capable motherboard and you'll effectively have 4GB of RAM working in dual channel.

should speed the phone up more than 10% as the core and memory can work indepently /ram and core eack core decoding recording video. If the firmware can switch of a core while not idle could result in battery savings too. remember its not dual core 2x 1ghz and 2x 512mb of ram lol would be cool though

How does 512Mb. of Dual-Channel RAM compare to 1Gb. of full RAM?

I am wondering on how 512Mb DDR2 dual-channel memory (RAM) stacks up to 1Gb of full DDR2 memory (RAM)? Which is better in performance wise? Aimed at LG Thrill 4G ( Optimus 3D).
Sent from my Samsung Galaxy S II using the xda premium app.

512Mb DDR2 dual-channel the better

More info please

does it have a duel core processor?
i am pretty sure that the new lg phone your talking about has a duel core processor as well which allows it to process data more like a computer, basically it can do two things at once instead of one thing.

The way I understand it (or try to) is that dual-channel memory works a lot like dual-core processors. It's not as simple as just doubling the speed (like 1ghz dual core is just like 2 ghz, or 512 dual-channel memory is just like 1 gig)
It boils down to better efficiency in handling calls to the memory. Double the available roadway, traffic goes smoother. You get a faster speed (although not quite double speed), and you do so using less battery.
I might be totally wrong, but I'm sure a google search into the difference would yield tons of reading material.

cromag.rickman said:
The way I understand it (or try to) is that dual-channel memory works a lot like dual-core processors. It's not as simple as just doubling the speed (like 1ghz dual core is just like 2 ghz, or 512 dual-channel memory is just like 1 gig)
It boils down to better efficiency in handling calls to the memory. Double the available roadway, traffic goes smoother. You get a faster speed (although not quite double speed), and you do so using less battery.
I might be totally wrong, but I'm sure a google search into the difference would yield tons of reading material.
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yes the RAM makes it more efficient, in handleing calls to the memory, and what calls the memory? the processor. and a duel core processor allows the computer to make two calls at once, it allows it to process data faster and more efficiently because it can handle two inputs instead of one. why do you think the numbers on processors core keep going up? their way higher for computers now. and optimus is the first phone to have a duel core, i believe, unless a apple product does but i don't have a clue about their phones.

So apparently dual channel ram is nothing but two 512mb pieces of RAM both exactly identical. The advantage over single channel RAM is that programs can access two pieces of data simultaneously whereas in single channel RAM a program can only access one piece, store it, and then read the next.
Obviously you still have the limitations of having 512mb total capacity - only being able to run so many apps simultaneously, but whatever you can run simultaneously should be able to access data twice as fast.
I read somewhere that the dual channel RAM isn't fully optimized in the Froyo build that shipped with the Thrill, but the Gingerbread update right around the corner will make better use of the dual channel technology.

vinvam said:
So apparently dual channel ram is nothing but two 512mb pieces of RAM both exactly identical. The advantage over single channel RAM is that programs can access two pieces of data simultaneously whereas in single channel RAM a program can only access one piece, store it, and then read the next.
Obviously you still have the limitations of having 512mb total capacity - only being able to run so many apps simultaneously, but whatever you can run simultaneously should be able to access data twice as fast.
I read somewhere that the dual channel RAM isn't fully optimized in the Froyo build that shipped with the Thrill, but the Gingerbread update right around the corner will make better use of the dual channel technology.
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Ahaha, okay thanks man cleared it up for me. Looking forward to our trade and make sure to hand me your address by Friday!
Sent from my Samsung Galaxy S II using the xda premium app.

Are these Computer parts Compatible?

I have never built a computer before and I am wondering if all of the parts I am going to use are Compatible Parts .
Parts List:
CPU: AMD A6-5400K 3.6GHz - 3.8 and can be overclocked Dual-Core Processor $69.98
Motherboard: ASRock FM2A75M-DGS Micro ATX FM2 Motherboard $55.98
Memory: Crucial Ballistix 4GB (2 x 4GB) DDR3-1866 Memory $54.99
Storage: Western Digital Caviar Blue 500GB SATA 3 7200 RPM 16 MB cache Bulk/OEM Desktop hardrive - WD5000AAKX $60.00
Case: Apex SK-393-C ATX Mid Tower Case $23.99
Keyboard: Toshiba Qosmio X300 (Black Glossy Flat) Keyboard $45.99
Power Supply: Corsair Builder 430W 80 PLUS Bronze Certified ATX12V Power Supply $24.99
I also would like to upgrade to a graphics card after a while. Are all of the parts compatible?

I am don't know about this but hope guys help you
Sent from my GT-I9000 using Tapatalk 2

khaled_ksa_511 said:
I am don't know about this but hope guys help you
Sent from my GT-I9000 using Tapatalk 2
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Please, this post is useless. Do something useful. Also, OP, try the off topic forum
Sent from my Galaxy S III

fanqiexiaoai said:
I have never built a computer before and I am wondering if all of the parts I am going to use are Compatible Parts .
Parts List:
CPU: AMD A6-5400K 3.6GHz - 3.8 and can be overclocked Dual-Core Processor $69.98
Motherboard: ASRock FM2A75M-DGS Micro ATX FM2 Motherboard $55.98
Memory: Crucial Ballistix 4GB (2 x 4GB) DDR3-1866 Memory $54.99
Storage: Western Digital Caviar Blue 500GB SATA 3 7200 RPM 16 MB cache Bulk/OEM Desktop hardrive - WD5000AAKX $60.00
Case: Apex SK-393-C ATX Mid Tower Case $23.99
Keyboard: Toshiba Qosmio X300 (Black Glossy Flat) Keyboard $45.99
Power Supply: Corsair Builder 430W 80 PLUS Bronze Certified ATX12V Power Supply $24.99
I also would like to upgrade to a graphics card after a while. Are all of the parts compatible?
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I would have to agree with ikoolkid but if u really want to know then:
1. Make sure your motherboard supports the processor you're trying to install (socket type, bus frequency and size),
2. Since you're trying to implement ddr3 ram, make sure the motherboard supports it, otherwise, don't waste your money buying ddr3 ram modules.
3. For graphics card, make sure your motherboard supports it.
4. make sure your power supply has the capacity of giving power to all components, add the power requirements of all devices and that should be a guide of how big u want that power supply.
5. read the specs for the motherboard and you'll find out if all those parts are compatible.
Sent from my GT-N7105 using xda premium

Just at a glance, I'd examine the case and PSU.
You want a case with good ventilation, and for that price, I doubt that's a great case - but pictures would help. You want one with cable management space too.
And your PSU will likely not support a decent GPU.
Not to be a jerk - but I built my first computer recently and unless this post is weird spam, I recommend you do research until you understand what you're doing.
Sent from my SGH-T999 using xda app-developers app

I've done some research on the compability of CPU, MB and RAM and they seems to be compatible, it has (by the asrock site specs)
- 1 x PCI Express 2.0 x16 slot (PCIE1 @ x16 mode)
- 1 x PCI Express 2.0 x1 slot
- 1 x PCI slot
for a new graphic card, but in my opinion, looking at the card, put a nice 2 slot graphic card would be a problem because of the space.
For the HD its ok, the MB has 6 SATA ports so fully compatible. As Pennycake said, the PSU should be more powerfull if u need a decent graphic card, otherwise for the combination u wrote it would be perfect.

Like others have pointed out this is not the place for this post we are a mobile device developers forum not a computer help website, please use the off topic area

It is compatible
Although of the off topic area might be better suited to this, I'll answer it anyway. So the main components that you need to worry about, the CPU and the motherboard, are both compatible. Be careful though, I have AMD processors can be quite easy to burn out if the processor isn't inserted correctly. Everything else should be fine. Don't be too concerned about heat with that case, you are powering a dedicated graphics card and by the time you do I don't think you will be aiming for a demanding high end one anyway. Cheap power supplies can be issue, so you be wary of any sudden shut downs, as it could be that in the future. Other than that good luck with your first PC build. Every one after this will be a breeze.
Oh before I forget, make sure that you have Sata cables for the hard drive, they usually come with the motherboard, but that isn't always the case.

i recommnd u 2buy cheaper ones,..

1gouravgg said:
i recommnd u 2buy cheaper ones,..
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Cheaper what? I am not sure they could go much cheaper.

Yea make sure the motherboard socket size matches the cup, everything else is pretty cross compatible. You don't want to order the wrong cpu and be like aw grits I ordered the wrong part and wait another week.

The cpu and the motherboards socket definitely marry up, so that isn't an issue. Like I said though, be very careful with installing AMD cpus.

Opinion on local tablet

I need your opinion on tablet hardware. it seems like a good deal so i just want to run by you pro's for a quickie
It's name is Vivax TPC-7150, and it's a dual core 1,5ghz, 1gb DDR3, 7" tablet.
it has a rockchip RK3066 A9 cpu and Mali-400MP gpu, 8gb storage, wi-fi, 1024x600 at 169ppi (at 5:3 ratio) (dont know exactly is it ips or regular tft matrix. one site says ips, another site says tft)
2 MP front camera, microusb, microSD and 3500mAh battery.
on local pc magazine test ("VIDI"), it scored like this:
Quadrant standard
Total 4036
CPU 7278
MEM 4237
I/O 6011
2D/3D 317/2337
Vellamo HTML5/Metal 1655/523
PassMark
System/CPU 1811/5626
Disk/Memory 1152/1427
2D/3D graphics 2989/767
It sells from 110€ and it's a product of a chinese factory and engineered by a croatian company
any opinion will be useful, but ofcourse i'll have to check it myself somewhere in the store first...
edit: sry, here's a link

There probably won‘t be any gurantee or warranty with it. If you can live with that then... it might be a risk worth taking.
I have seen chinese tablets before which have specs that are different than the one promised on the box.

It's decent. You might be able to do better for the same money, but I can't say with what off the top of my head. The 5:3 is kind of weird. You might be able to get away with the 8Gb since it has an external SD slot - but consider you'll have to spend another $20 on that - and you can't put all apps and such on it.
If it is legitimate and that will be actually what you are getting, of course.

why do you think i cant put apps on microsd card?
and sorry for my misexplaining. It's a local croatian company (Vivax) that has "developed" the tablet and has it produced in china (like many other companies do), so i think there shouldnt be any problems with warranty....
what about rooting and flashing different ROM? how can i tell which ROM i can use and what tool to root it with?
I only have my x8 so i'm not so familiar with other devices...

can you please help me only with an answer for rooting and flashing rom?
can i flash any rom that is programmed for similar characteristics tablet? and is there a unique tool for rooting or is it device specific?

P_KAMENi said:
can you please help me only with an answer for rooting and flashing rom?
can i flash any rom that is programmed for similar characteristics tablet? and is there a unique tool for rooting or is it device specific?
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No. It needs to be made for you exact device or you will brick it and turn it into an expensive paperweight that will not turn on again.
Not all apps can be moved to the SD card. There might be ways around it, but it can be hit or miss and I wouldn't count on it.