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Changing BGA and F-BGA qualcom chips for MT3G1.2 ?

I'm going to be doing some development these coming months on changing the BGA pinned qualcom cpu 's on the MT3G over to a hummingbird chip.
While i understand the instruction sets are different i still believe there may be a way to accomplish this.
I was wondering 2 things, does XDA-Dev have a hardware modding forum ?
And does XDA-Dev have a forum specifically for the MT3G1.2 ?
Since the Black 1.2 has a different touchscreen/processor(while it might not be completely different)/and more ram.
This would be very helpful
Thanks!
David

...does XDA-Dev have a hardware modding forum ?
And does XDA-Dev have a forum specifically for the MT3G1.2 ?
Answers:
None that I'm aware of.
You're in it.

Binary100100 said:
...does XDA-Dev have a hardware modding forum ?
And does XDA-Dev have a forum specifically for the MT3G1.2 ?
Answers:
None that I'm aware of.
You're in it.
Click to expand...
Click to collapse
Thanks for that concise reply
The reason for my asking this, it seems there is a separate forum for each individual phone available from HTC, (i dont work for htc) ,however since the mytouch 1.2 does infact have different hardware what is stopping us from making a separate forum for that as well
Thanks again!!!
David

bugmenever said:
I'm going to be doing some development these coming months on changing the BGA pinned qualcom cpu 's on the MT3G over to a hummingbird chip.
While i understand the instruction sets are different i still believe there may be a way to accomplish this.
I was wondering 2 things, does XDA-Dev have a hardware modding forum ?
And does XDA-Dev have a forum specifically for the MT3G1.2 ?
Since the Black 1.2 has a different touchscreen/processor(while it might not be completely different)/and more ram.
This would be very helpful
Thanks!
David
Click to expand...
Click to collapse
This will be quite interesting, please keep us up to date

bugmenever said:
...what is stopping us from making a separate forum for that as well
Click to expand...
Click to collapse
I've asked this a couple of times but I imagine it's because it's still technically a MyTouch.
The problem that I see is that it's exactly like a traditional 32A device but with a 32B radio and spl. So most roms found in the MyTouch forum won't work on the MyTouch 1.2 device unless it's specifically made for it. So most MyTouch 1.2 roms are actually in the G1 forum. So yeah... that's why I think there should be one a MyTouch Fender forum... but alas... I'm not an administrator.

erm...i don't think you will be able to replace a BGA Chip since you just cannot solder BGA chips by yourself...
you gonna need to take of the old one which is the first problem, bc if you heat it up, other parts will also fall off if you dont know what youre doing
the 2nd one is that it's not sure that the other qualcom chips are pin-compatible
the 3rd one would be simmilar to the first one, you cannot solder BGA chips without an reflow oven or simmliar tools, and that tools definately would cost you more that a brand new android phone, plus you need VERY MUCH experience to solder BGA chips...

arthofer said:
erm...i don't think you will be able to replace a BGA Chip since you just cannot solder BGA chips by yourself...
you gonna need to take of the old one which is the first problem, bc if you heat it up, other parts will also fall off if you dont know what youre doing
the 2nd one is that it's not sure that the other qualcom chips are pin-compatible
the 3rd one would be simmilar to the first one, you cannot solder BGA chips without an reflow oven or simmliar tools, and that tools definately would cost you more that a brand new android phone, plus you need VERY MUCH experience to solder BGA chips...
Click to expand...
Click to collapse
It's now very easy to solder bga and f/s bga with the new heat guns and solder tools that have recently been made available
they are not that expensive either, you can build a makeshift one for about 50 bucks
also check out
http://www.dailymotion.com/video/x34hz8_hand-soldering-bga-components-using_tech
The pinning is a different problem (its more of a numismatic issue if anything), however as long as we can get the board to recognize the instruction sets in theory it should work.
This has also become increasingly easier now that the snapdragon and hummingbird firmware source has been made available to the public.
(arm 7 and arm 8)
Binary100100 said:
I've asked this a couple of times but I imagine it's because it's still technically a MyTouch.
The problem that I see is that it's exactly like a traditional 32A device but with a 32B radio and spl. So most roms found in the MyTouch forum won't work on the MyTouch 1.2 device unless it's specifically made for it. So most MyTouch 1.2 roms are actually in the G1 forum. So yeah... that's why I think there should be one a MyTouch Fender forum... but alas... I'm not an administrator.
Click to expand...
Click to collapse
Thats kinda lame. =/
Also by the way, the processor in the black mytouch 3g 1.2 and the fender are different, the stock clock is the same speed however the 1.2 model 's chip has different microcode.

yeah you can use the board to solder down a BGA chip for a custom circuit, but there will be NO WAY that you replace the original BGA chip in the phone with your own one
also, "making the board reognize instruction sets" is a pretty big step for one sentence...

arthofer said:
yeah you can use the board to solder down a BGA chip for a custom circuit, but there will be NO WAY that you replace the original BGA chip in the phone with your own one
Click to expand...
Click to collapse
You sound pretty sure of that. BGA / F/S BGA chips are pretty much just like any other chips, the only difference is the pins are smaller, it will be nothing more than a tight squeeze. As long as the pin layouts and the voltage settings match on the data sheets, i most certainly can change and replace the chips with my own.
also, "making the board reognize instruction sets" is a pretty big step for one sentence...
Click to expand...
Click to collapse
We wont know until we try. It's all in the pneumatics.

i've gotten a little further with this today, i successfully was able to dismantle a mt1.2 de-solder and then re-solder the existing FBGA cpu. -Rebooted the unit and all is working fine !
I'm going to do some more research on the rom and some neocore and other tests to make certain i haven't done any damage whatsover to the unit.
Then go hunting for a snapdragon and hummingbird vendor.
Or take the parts out of a existing unit.
This was no small task by any means and i do NOT recommend anyone trying this unless they are experienced with soldering (soldering BGA) and have _proper ventilation_.
I hope to have some more information for you guys all soon.
Its my ultimate goal to make this project cost affective so anyone can do it in there free time with little overhead cost.
Kind Regards,
David

I would love to see how this goes.
On a separate note bugmenever - do you think it is possible to increase the ram on a phone?

anwoo said:
I would love to see how this goes.
On a separate note bugmenever - do you think it is possible to increase the ram on a phone?
Click to expand...
Click to collapse
I did this with a chinese touch MP4 player and it worked, i just put the same ram on top of the other and it really worked! maybe you can do the same with Phones too!!

I'm very experienced with soldering so I would love to see where this goes.
Sent from my SpeedTeam Magic using XDA App

So let me see if I'm understanding this correctly...OP wants to swap the old 528 MHz Processor with a Hummingbird or Snapdragon 1GHz Processor?
If you actually manage to pull this off, I will be amazed and be tempted to try it myself.

crzygrmn said:
I did this with a chinese touch MP4 player and it worked, i just put the same ram on top of the other and it really worked! maybe you can do the same with Phones too!!
Click to expand...
Click to collapse
Erm...what do you mean by "put the same ram on top"?

Visible ram?

As some of you may know, the galaxy s line of phones physically has 512 mb of memory, but much of it is reserved for hardware functions. I was wondering if the nexus s has the same restrictions as on the SGS you can only get around 341MB and keep the phone fully stable - Google may have discovered a workaround or something.
Thanks for any assistance.
Sent from my GT-I9000 using XDA App

jaju123 said:
As some of you may know, the galaxy s line of phones physically has 512 mb of memory, but much of it is reserved for hardware functions. I was wondering if the nexus s has the same restrictions as on the SGS you can only get around 341MB and keep the phone fully stable - Google may have discovered a workaround or something.
Thanks for any assistance.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
from what i have seen 384mb 346MB is available to the system by default just like when the N1 launched a few kernel tweaks should fix it though
heres where i found it
http://forum.xda-developers.com/showpost.php?p=9666947&postcount=5

RAM
jaju123 said:
As some of you may know, the galaxy s line of phones physically has 512 mb of memory, but much of it is reserved for hardware functions. I was wondering if the nexus s has the same restrictions as on the SGS you can only get around 341MB and keep the phone fully stable - Google may have discovered a workaround or something.
Thanks for any assistance.
Sent from my GT-I9000 using XDA App[/QUO
The operating system on your phone (Android) reserves a portion of the installed RAM in order to function properly. This also holds true for computers. It's always been that way. The operating system reserves RAM in order to function properly. There is no workaround for this. 512mb of RAM is huge for a cell phone. I'd be surprised if you ever ran low on RAM on your cell ohone. I really wouldn't be too concerned about it. Hope the helps.
Click to expand...
Click to collapse

[Q] LG optimus 3d (RAM 512 = too little?)

I have seen other phones that are dual core too, i.e the Evo 3d, motorola atrix, but with 1gb ram. When it comes to gaming, and not just counting the 3d aspect of it. Will the 512 mb of ram be enough to run even upcoming games. Can this device stand newer games that other phones like the htc evo 3d might have no problem handling? Share some thoughts on this. thnx

omfg AGAIN???? :/
512mb are ABSOLUTELY enough!!!
just look at this review
http://www.youtube.com/watch?v=GEE65bNN8mc&feature=player_embedded
8 apps open and phone still fast

While the dual channel technology might bring some small performance benefits, 512MB will remain 512MB.
Current games should be no problem at all, but upcoming games (utilizing the unreal or unity engine for example) will definitely step up in terms of texture amount+resolution and general amount of data (see recent news of Shadowgun for example).
This could become a disadvantage at a certain point, but we´ll have to wait for some hard numbers when the time will come.
But i´m confident that the optimus 3d can keep up at least for 1 year (until we actually experience noticeable performance disadvantages with more advanced and complex games aimed at the Tegra3 Platform and other upcoming chipsets).

I have experienced some lock up'freezing issues when play the included games in 3D. I rooted my phone, so i dont know if its due to that or if its just due to the fact its a developer phone and the software is not final. I still love this phone, very fast and i get 8mb average dl's on Tmo here in the Bay Area(Hayward).

Could someone who has a pre release O3D unit have a look and see how much free ram is available after start-up please? (i'm an android newbie, not sure if this is possible on LG androids in general, without a specific app?) Just wondering how much ram the system leaves you to use....?
Thanks
Ian

i'm confused here...
i was under the impression that the concept here was tri-dual (dual core, dual channel memory, DUAL RAM) resulting in there being 1gb of ram configured as 512mb per core?
is that not what's happening?

It´s supposed to be 256|256 ^^

that's a bit dissappointing then.
however, as has been pointed out, it doesn't seem to affect overall performance much. i can see it being a hinderance to the future longevity o the phone though. a newer-than-gingerbread version of android on the horizon which will undoubtedly demand for higher specs could see this become a problem.

According to the presentation it's supposed to be memory for gpu and memory for system

Has anybody with a pre or final relase O3D managed to find out how much free ram is available after a cold start up please? (i.e no apps/games running, only a task manager) If it's something like 200 - 250mb then that should be ok i guess, HTC seem to think that amount is ok on their sensation, and that started with 768mb..... Sense 3 seems to be a bit of a resource hog, it seems.....
Thanks
Ian

i saw in a videopreview,about 340mb free.

nic85 said:
i saw in a videopreview,about 340mb free.
Click to expand...
Click to collapse
Thanks for this, if you could provide a link or something i'd be grateful 340mb available is better than i'd hoped for
Thanks
Ian

can't find that,but i have this
http://www.batista70phone.com/2011/05/video-recensione-lg-optimus-3d-by-batista70phone/
18:55

300+meg of free ram is loads and there will probbaly be more if you kill off some of the crappy stock services that you might not need, for example google talk.

hefonthefjords said:
300+meg of free ram is loads and there will probbaly be more if you kill off some of the crappy stock services that you might not need, for example google talk.
Click to expand...
Click to collapse
nd remember its an old software the latest as we speak is June the 5th so things must be getting better,I need this phone now its getting really tough every day trolling the web for info sad muppets we are well me anyway

cheltenham2004 said:
nd remember its an old software the latest as we speak is June the 5th so things must be getting better,I need this phone now its getting really tough every day trolling the web for info sad muppets we are well me anyway
Click to expand...
Click to collapse
if it gets delayed again

hehe, agreed. i'm just fed up of my current phone. too old/not powerful enough for gingerbread and locked bootloader so only a poor port of cyanogenmod with an un-customisable kernel. long overdue time for new toys.

hefonthefjords said:
hehe, agreed. i'm just fed up of my current phone. too old/not powerful enough for gingerbread and locked bootloader so only a poor port of cyanogenmod with an un-customisable kernel. long overdue time for new toys.
Click to expand...
Click to collapse
Sounds like you have the motorola milestone

totally.
it's like motorola gave me a gold brick and the punched me in the face every day since.

If an O3D is supplied directly from a network, and comes loaded with their bloatware, will this affect the amount of free ram available?
Thanks
Ian

[Q] Add DDR Ram to the tf?

As a little hardware project, does anyone think it's possible to add/upgrade the RAM on the tf. I see it as the weakest point on our beloved machine :3 I've thought of 3 options:
1. Add a better stick/another stick to increase size (optimal)
2. Change the DDR2 stick to a DDR3 (Good)
3. Optimize the current RAM, mabye run ram off of flash memory? (okay)
Is this possible? What sort of ram would be needed?

Thing O Doom said:
As a little hardware project, does anyone think it's possible to add/upgrade the RAM on the tf. I see it as the weakest point on our beloved machine :3 I've thought of 3 options:
1. Add a better stick/another stick to increase size (optimal)
2. Change the DDR2 stick to a DDR3 (Good)
3. Optimize the current RAM, mabye run ram off of flash memory? (okay)
Is this possible? What sort of ram would be needed?
Click to expand...
Click to collapse
#1
Is yes i see no reason why you can't change the ddr2 1gb to something bigger (i own reflow eq for doing mods like this)
You will need real tools not a easy mod it's a 10 out of 10 for most anyone with a high risk you might destroy your tf101
I have done 8 cable modems 6 routers a few printers and a kendel fire with good results
But i do repairs like this at work every day.
The tools used set me back about 1,900$ US
I have no problems doing the mod for others but your going to have to pay for all supplies and shipping both ways
I have been a server repair tech for 7 years.
Some changes to the kernel might be needed
I have not done this to my tf101 but i did change my tf101 flash to 32GB with no problems had to nvflash to load rom but i had known i might have to
#2
No tegra only works with ddr2
#3.1
Most custom roms do a lot of optimizing to your apps if you reboot and format catch
#3.2
Yes but bad idea it's just way to slow to be any real help
Sent from my Transformer TF101 using Tapatalk 2

darn, because tegra 3 works with ddr3. (tf prime) I don't have sbkv1, so the nvflash to reload a rom if I really mess up sounds a tad scary.. Also my budget is more like 250-300USD not 1900!! That'd be insane, I might as well get an ultrabook at that price
I'll have to settle with trying to tweak the page file a bit, thanks

Is it really possible to swap the ram in the tf101?
I would not say no to my tablet having 4gb of ram hell even 2gb
Anyone can confirm? Or maybe give a little instruction on suitable ram etc?
Sent from my Transformer TF101 using XDA Premium HD app

Danzano said:
Is it really possible to swap the ram in the tf101?
I would not say no to my tablet having 4gb of ram hell even 2gb
Anyone can confirm? Or maybe give a little instruction on suitable ram etc?
Sent from my Transformer TF101 using XDA Premium HD app
Click to expand...
Click to collapse
Technically yes, its possible... but trust me, nobody will be doing it. It is not like changing RAM in a PC, the RAM is literally a single IC soldered directly to the motherboard next to the tegra2 chip.

My soldering skills are average, so that'd be out of my league, I don't want to break it D:

a.mcdear said:
Technically yes, its possible... but trust me, nobody will be doing it. It is not like changing RAM in a PC, the RAM is literally a single IC soldered directly to the motherboard next to the tegra2 chip.
Click to expand...
Click to collapse
So you could technically put 2-4gb of ram in the tf101?
If you edited things round a little could you also dedicate more ram to the gpu?
I just think its quite an interesting and awesome idea also i get my ram down to 250mb free or lower quite often.
Sent from my Transformer TF101 using XDA Premium HD app

Danzano said:
So you could technically put 2-4gb of ram in the tf101?
If you edited things round a little could you also dedicate more ram to the gpu?
I just think its quite an interesting and awesome idea also i get my ram down to 250mb free or lower quite often.
Sent from my Transformer TF101 using XDA Premium HD app
Click to expand...
Click to collapse
I think he did say you'd need a custom kernel though. So if you know how to compile, go right ahead.

It will also depend on if the Tegra2 can recognize more than 1 GB of RAM. I read somewhere that this is a limitation that the chip will not recognize more, but I do not have the source to know for sure.

IO Troubles what's the progress on that?

After finally being able to unlock my bootloader (for those still having trouble: I mailed asus directly about it and after the basic tips of factory reset and stuff they elevated my call and suddenly I was able to unlock.. not sure if my mails helped but was quite funny it happened the day they elevated it), I started investigating more on the capabilities of this sweet device. Now basically I wanted to do more with PDF's and well here the IO troubles are a pain So yeh.. is there a firmware team working on it? or is this something we'd have to wait for on asus?
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2

Completely on Asus's side. There is nothing we can do as users without either a better unlock or using flakey hackish workarounds to reduce (tho not eliminate) the problem.
Basically, consider this: You have a car with a corvette engine in it with the transmission of, say, a Ford Model T. You just can't get the power to where its needed.
The Tegra3 chipset is kind of like that. Boatloads of horsepower but it struggles to get that power to the wheels and you get lots of ANR's. Asus needs to find a way in the kernel which is locked tighter than Fort Knox to streamline the process while keeping stability up.

If you want the best experience for pdfs then download perfect viewer and the pdf plug in from Google play and all your io issues will be gone.
Seriously try it. No other pdf viewer can compete.

djmulder said:
After finally being able to unlock my bootloader (for those still having trouble: I mailed asus directly about it and after the basic tips of factory reset and stuff they elevated my call and suddenly I was able to unlock.. not sure if my mails helped but was quite funny it happened the day they elevated it), I started investigating more on the capabilities of this sweet device. Now basically I wanted to do more with PDF's and well here the IO troubles are a pain So yeh.. is there a firmware team working on it? or is this something we'd have to wait for on asus?
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
Since you're unlocked I suggest you try the Zeus rom v4, just out. Very fast, makes a big difference.

pileot said:
Completely on Asus's side. There is nothing we can do as users without either a better unlock or using flakey hackish workarounds to reduce (tho not eliminate) the problem.
Basically, consider this: You have a car with a corvette engine in it with the transmission of, say, a Ford Model T. You just can't get the power to where its needed.
The Tegra3 chipset is kind of like that. Boatloads of horsepower but it struggles to get that power to the wheels and you get lots of ANR's. Asus needs to find a way in the kernel which is locked tighter than Fort Knox to streamline the process while keeping stability up.
Click to expand...
Click to collapse
Odd, because my Tegra 3 HTC One X is significantly faster than both my TF201 and TF700. Either Asus had botched optimizing the kernel or they cheaped out on the internal memory, yet again.

okantomi said:
Since you're unlocked I suggest you try the Zeus rom v4, just out. Very fast, makes a big difference.
Click to expand...
Click to collapse
Yeh it's on the planning I am already running a Zeus rom. Just noticed 4 has been released.. can't do it now tho, on 3g and my provider caps the speed after 1gig >.<

REAVER117 said:
Odd, because my Tegra 3 HTC One X is significantly faster than both my TF201 and TF700. Either Asus had botched optimizing the kernel or they cheaped out on the internal memory, yet again.
Click to expand...
Click to collapse
Well part of it is the scheduler which far as i know (i could be wrong) is in the kernel. A custom kernel def could help tho we dont have access
Another problem could be cheap memory chips for the internal storage. Chances are they went with the lowest bidder and got crap quality. Why put class 2 chips in a device that demands class 10 or higher? WTG Asus. (speculation on this one, tho it makes sense)
Also, other teg 3 devices could run faster but what other things factor into it? Smaller resolution screen = much less pixels to update. Possibly faster / greater quantity of ram. Different kernel and rom optimizations. Different power managment settings. Different clock settings. Different voltage settings (chips can be undervolted and overclocked with varying results) LOOOOTS of factors go into "why X device might go faster even with the same processor).
Picture this: A semi truck and a smart fortwo are given the exact same engine. Which will go faster? The smartcar. And yet if this were android you would still have people say "But its the same engine! why does the semi go slower?" Same principal.

pileot said:
Well part of it is the scheduler which far as i know (i could be wrong) is in the kernel. A custom kernel def could help tho we dont have access
Another problem could be cheap memory chips for the internal storage. Chances are they went with the lowest bidder and got crap quality. Why put class 2 chips in a device that demands class 10 or higher? WTG Asus. (speculation on this one, tho it makes sense)
Also, other teg 3 devices could run faster but what other things factor into it? Smaller resolution screen = much less pixels to update. Possibly faster / greater quantity of ram. Different kernel and rom optimizations. Different power managment settings. Different clock settings. Different voltage settings (chips can be undervolted and overclocked with varying results) LOOOOTS of factors go into "why X device might go faster even with the same processor).
Picture this: A semi truck and a smart fortwo are given the exact same engine. Which will go faster? The smartcar. And yet if this were android you would still have people say "But its the same engine! why does the semi go slower?" Same principal.
Click to expand...
Click to collapse
Well ok that said, (also just speculation) wouldn't "most of the IO troubles" be solved by one brave guy who posts a "how to safely break open your $700 device and replace the internal sd card" ?
My first tablet was a ****ty dropad I picked off some chinese site for $100 .. it's internal memory was in fact a ****ty 4 gig card .. I believe it was class 2 even.. so some brave guy cracked it open and wrote how to do this. So I ended up doing the same and indeed solved alot of problems.

djmulder said:
Well ok that said, (also just speculation) wouldn't "most of the IO troubles" be solved by one brave guy who posts a "how to safely break open your $700 device and replace the internal sd card" ?
My first tablet was a ****ty dropad I picked off some chinese site for $100 .. it's internal memory was in fact a ****ty 4 gig card .. I believe it was class 2 even.. so some brave guy cracked it open and wrote how to do this. So I ended up doing the same and indeed solved alot of problems.
Click to expand...
Click to collapse
It would have been great if Asus chose to use an internal SD card!! Can you imagine the HACKABILITY?!?!?
Unfortunately no internal sd card in the infinity: http://guide-images.ifixit.net/igi/MHZKnMyJmRCfQwPn.large

oh well darn
tho not entirely sure what I am looking at I do recognise some chips on that pcb
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2

jordanmw said:
It would have been great if Asus chose to use an internal SD card!! Can you imagine the HACKABILITY?!?!?
Unfortunately no internal sd card in the infinity: http://guide-images.ifixit.net/igi/MHZKnMyJmRCfQwPn.large
Click to expand...
Click to collapse
Based on the ifixit site these images were taken from there are memory chips there:
Hynix H26M64002BNR e-NAND and 2x Elpida memory J4216EBBG-GNL-F
Do you know which one is the culprit often mentioned as "cheap" RAM and partly the cause for the IO issues?

djmulder said:
oh well darn
tho not entirely sure what I am looking at I do recognise some chips on that pcb
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
I'm not a developer but closely follow the xda forums on all my devices and have learned a few things (but may not use correct terminology, so bear with me). It seems that when we have kernel source code (and ASUS TF700 binaries), kernel devs can use the linaro tool chain and produce some really amazing kernels which, together with the rendering enhancements in Jelly Bean, will improve performance a great deal, across the board. The GPU can be overclocked.. there's a lot that can be done with the hardware we have...just need source code/ASUS TF700 binaries.

rambling1 said:
Based on the ifixit site these images were taken from there are memory chips there:
Hynix H26M64002BNR e-NAND and 2x Elpida memory J4216EBBG-GNL-F
Do you know which one is the culprit often mentioned as "cheap" RAM and partly the cause for the IO issues?
Click to expand...
Click to collapse
Hmm ok so judging by a quick lookup it's comparable to a class 10 flash? (quick google tho, so I might be WAY off )
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2

There's more information here: http://www.anandtech.com/show/6073/the-google-nexus-7-review/6 including some benchmarking of the Infinity, Nexus 7 and Samsung Galaxy Nexus. It does look like Asus cheaped out on the NAND in their tablets.

I'm not so sure that the problem lies in "cheap" components. I've been digging through the kernel source and the only NANDs that keep popping up are:
00491: case 0xD5: /* Hynix H27UAG8T2A, H27UBG8U5A or H27UCG8VFA */
00492: case 0xD7: /* Hynix H27UDG8VEM, H27UCG8UDM or H27UCG8V5A */
first 3 are from Hynix's Q4 2011 Databook and second 2 from the Q2 2009 Databook (couldn't find the last one) and none of them match the one seen in the teardown http://www.ifixit.com/Teardown/Asus-Transformer-Infinity-TF-700-Teardown/10306/1
(Sorry, formatting got ruined so I did a quick -- insert to make it readable)
Product -- Tech -- Density -- Block Size -- Stack -- Vcc/Org -- Package -- Avail. -- Remark
H27UAG8T2A-- 4ynm-- 16Gb -- 512KB(4KB Page)-- SDP --3.3v/X8-- TSOP-- EOL
H27UBG8U5A-- 4ynm-- 32Gb -- 512KB(4KB Page)-- DDP-- 3.3v/X8-- TSOP-- EOL
H27UCG8VFA-- 4ynm 64Gb-- 512KB(4KB Page)-- QDP-- 3.3v/X8-- TSOP-- EOL
H27UDG8VEM -- 41nm-- 128Gb -- 512KB(4KB Page) -- QDP -- 3.3v/X8 -- VLGA -- Mar. 09 -- 4CE,Dual CH.
H27UCG8UDM -- 41nm -- 64Gb -- 512KB(4KB Page) -- DDP --3.3v/X8 -- VLGA -- Mar. 09 -- Dual CH.
H27UCG8V5A-- ?-- ? -- ? -- ?-- ?-- ?-- ?-- ?
I honestly think that ASUS is just kicking these things out the door as fast as possible and not putting enough time into actually working on or even attempting to co-develop drivers. They just slap in a reference driver that works and go. Even the JB source for TF300 has the exact same NANDs referenced.
After seeing this I started looking through the Prime forum and see the devs there had came to this conclusion months ago. It seems we've put to much faith into this company. Yes, they've set the bar a little higher in terms of hardware, but they apparently are unwilling or unable to make it work well

As mentioned before with proper source code developers could fix a lot. We need to push for source code.
The io performance has something to do with the synching between tegra and sqlite. It's so bad or it was on tf201 that it can't possibly be all hardware as a cause.
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