Develop Bugs

jtag pinout

Hello, does someone have the jtag pinout for the uni?
Or at least the circuit diagram...

I thought the whole point of jtag was that it was a standardised interface connector:
http://www.interfacebus.com/Design_Connector_JTAG_Bus.html
or am I misunderstanding your question?
Cheers,

yes, I know what is jtag but probably my question was misplaced.
what I would know is where are jtag testpoints on universal.
my phone is bricked and the only hope of resurrection is restore the bootloader through jtag

ah right, I'm with you now. have you checked out the universal reference manual? is it mentioned in there?
-edit- no just checked doesnt appear to have any mention or picture of one.

sadly true: the service manual doesn't mention it.
does someone has got schematics for the universal?

sigh! i'm going to believe that my uni will be forever a nice paperweight...

any news?
Hello, I'm still stuck with my uni bricked. Anyone have new suggestions or jtag pinout?
Thanks!

I payed about 50USD to have my bootloader chip replaced here in China.
cant find any other solution for the same brick here. I'v heard someone here fixed his dead bootloader by jtag DOC reflash.good luck.

Hi champro, then does you have got the bootloader chip replaced and not reflashed?
Does you could contact someone to get jtag pinout for the universal?
Thanks a lot.

Any success for bootloader solutions ? I also have a bricked universal.
Thanks

Still nothing...
Hi, I haven't debricked my uni yet. But in the meantime I'm looking for a dead mainboard (or a whole dead phone) in the way I'll could desolder the cpu to trace the jtag pins. When I'll have this pinout I'll count on the support of this forum to find a pal that will dump a working phone to restore mine.

roglio said:
Hi, I haven't debricked my uni yet. But in the meantime I'm looking for a dead mainboard (or a whole dead phone) in the way I'll could desolder the cpu to trace the jtag pins. When I'll have this pinout I'll count on the support of this forum to find a pal that will dump a working phone to restore mine.
Click to expand...
Click to collapse
we are allready doing this no need to break two phones

Great!!!!!!!!
Fantastic! May I participate? I'm a average experienced user with jtag interfaces and a dead M5000 to work on!
Please is a lot of time that I'm waiting for the jtag pinout!

ok Lt.Cmdr.Ivan is going to trace the JTAG points from under the CPU of his dead Universal, last I heard he was about to put it in a toaster to get it off
You say you have JTAG experiance? When we find the points could you work out the best/only method etc to fix a broken Universal

Yes, I've already debricked a toshiba e740 pda last year. A complete success!
The best way to desolder a bga is to use a heater gun like those used to remove paint from walls. It is very cheap 15~20$. If you aim to the motherboard with this gun, surface mounted components literally fly away or fall down if is it in vertical position.
I'll wait anxiously for news!!!

i suppose who can afford a digital multimeter, can afford a hot-air soldering station as well. (well under $100 now)
anyway, you can just use a 300W infrared bulb and several hours and the work is done as well.
just pick off the plastic items before applying this heat.

Hi, any news? The number of bricked universal is growing!!!

roglioWhat software you used and what adapter LPT (wigler )or another?
If you know the points jtag as you will write in DOC (DiskOnChip) SPL and IPL ?

Just fyi progress ont he JTAG project can be found here:
The Universal JTAG Project

We found them

[Q] Physical EMMC chip failure

My question is concerning a physical EMMC chip failure. I have rooted my phone and eventually bricked it, I didn't want to go through the carrier because if I was the cause of my phone being bricked I didn't mind taking responsibility for it. I found out though that it was a physical EMMC chip failure. If its a hardware problem that was not my fault I wouldn't mind taking it to my carrier's store to get fixed. So can rooting your phone cause a EMMC chip to fail?

ruin700 said:
My question is concerning a physical EMMC chip failure. I have rooted my phone and eventually bricked it, I didn't want to go through the carrier because if I was the cause of my phone being bricked I didn't mind taking responsibility for it. I found out though that it was a physical EMMC chip failure. If its a hardware problem that was not my fault I wouldn't mind taking it to my carrier's store to get fixed. So can rooting your phone cause a EMMC chip to fail?
Click to expand...
Click to collapse
Rooting by itself isn't enough to cause the brick. Flashing something through CWM that called an older script could cause it as it was causing issues in the emmc partition controlled by the emmc chip.

ruin700 said:
My question is concerning a physical EMMC chip failure. I have rooted my phone and eventually bricked it, I didn't want to go through the carrier because if I was the cause of my phone being bricked I didn't mind taking responsibility for it. I found out though that it was a physical EMMC chip failure. If its a hardware problem that was not my fault I wouldn't mind taking it to my carrier's store to get fixed. So can rooting your phone cause a EMMC chip to fail?
Click to expand...
Click to collapse
How do you know it was a "physical" chip failure??? Have you already taken it to a service center???
It's not often in these forums that you see someone will to take responsibility when they dork there device... But I must say it is nice to see.
But like rwilco stated, simply rooting your phone doesn't cause the eMMC brick. The only real way is to flash or wipe the wrong way.
I don't think your eMMC chip has "physically", unless you've taken your device apart and checked it specifically.
I'm get the feeling the you just flash or wiped from an unsafe ICS kernel/recovery.
Sent From My Galaxy10.1 Class Starship....

An emmc brick is not a physical failure.. it is though a bug in the firmware put in by the manufacturer that we can't patch. You can, if you don't want to goto the carrier, repartition the phone and not use the corrupted emmc area, assuming its not in the bootloader area.
Sent from my SPH-D700 using xda app-developers app

haven't a few people got their borked emmc phones fixed directly through Samsung support as well? I know I saw a post somewhere around here... I think in the thread that led to our current emmc thread in general where at least one person had success sending it directly to Samsung for warrenty service
Sent from my SPH-D710 using xda app-developers app

cp320703 said:
haven't a few people got their borked emmc phones fixed directly through Samsung support as well? I know I saw a post somewhere around here... I think in the thread that led to our current emmc thread in general where at least one person had success sending it directly to Samsung for warrenty service
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
I brick my phone on April, I sent for repair to Josh, in Texas, mobiletechvideos.com.
He can"t fixed, then I had to send to Samsung, and they repaired for me. Try any of these first, Good luck.:good:

mguzman0971 said:
I brick my phone on April, I sent for repair to Josh, in Texas, mobiletechvideos.com.
He can"t fixed, then I had to send to Samsung, and they repaired for me. Try any of these first, Good luck.:good:
Click to expand...
Click to collapse
I am reviving an old thread, but this comes up in google when searching for emmc failure.
same with my galaxy S2, sent to mobiletechvideos and they can'T repair it.. emmc failure.
I will try with Samsung. Where did you send it? Mine is not under warranty.

[Q] Galaxy Note 2 seems bricked, Can we turn it alive ?

Got galaxy Note 2 , totally bricked right now , Gave it to my friend and he returned me back with completely black screen. Could you please suggest me if anything i can try on this one.
Things i have tried so far
1) Tried with different battery no luck
2) externally charge battery with external charger no luck
3) checked all the connectors inside , all are looking intact
4) replaced charging port no luck
Seems like this device got bricked somehow, is there any way to turn it alive ??

Riffbox or jtag. Mine died last week this way it came back to life unfortunately mine have kind a issue with emmc so it will gonna die eventually again. I hope yours one is ok.

badtzo said:
Riffbox or jtag. Mine died last week this way it came back to life unfortunately mine have kind a issue with emmc so it will gonna die eventually again. I hope yours one is ok.
Click to expand...
Click to collapse
Please consider me Novice in JTag field, Do we need different boxes for different devices, i have seen several videos on Jtag,I have sent mail to their US distributor bcoz unfortunately we do not have any in Canada. What's the success rate on these devices ?? Do we have any instructional videos or any support how to use RIFFBOX , just want to make sure if i would be able to use it before i make my order

I have just realised that you don't tell us if you have warranty... if you have it then use it. Cause the way I've told you before probably will void the warranty.
----
I don't know how it works in your country but here in mexico, there are several External Service Centers (not official) they repare anything, softbrick, hardware brick, change the case cover, dialpad, etc. but it has a cost. If you buy the box just to repair your phone I think it will cost a lot of money to you since this boxes works with a lot of models of different brands (they are expensive) and you need technical knowledge about how to work with them.
In my case, the Service Center first tried with riffbox (cheaper and fast way) and it worked to turn on the phone in a couple of minutes, it was indicating there was bootloader broken so it worked when tried to rapair it but since my emmc memory was kinda buggy, it died the same day, so i left it again to warranty on the SC and they then tried with jtag this way they told me is like the "hard reset" since wipe and make again the partition system and install all the stuff, now works pretty well but they make a warning to me abut future deads because the final solution and the real one that needs my phone is to change the motherboard (they don't change just the emmc).
But if your emmc is ok, they probably just need to use riffbox maybe jtag but your phone will surely be ok again.
the cost for the reparation should be about 30-50 USD
If you don't know where is one of this external service centers on your town, try searching on google about riffbox, jtag service center in -your town-.

badtzo said:
I have just realised that you don't tell us if you have warranty... if you have it then use it. Cause the way I've told you before probably will void the warranty.
----
I don't know how it works in your country but here in mexico, there are several External Service Centers (not official) they repare anything, softbrick, hardware brick, change the case cover, dialpad, etc. but it has a cost. If you buy the box just to repair your phone I think it will cost a lot of money to you since this boxes works with a lot of models of different brands (they are expensive) and you need technical knowledge about how to work with them.
In my case, the Service Center first tried with riffbox (cheaper and fast way) and it worked to turn on the phone in a couple of minutes, it was indicating there was bootloader broken so it worked when tried to rapair it but since my emmc memory was kinda buggy, it died the same day, so i left it again to warranty on the SC and they then tried with jtag this way they told me is like the "hard reset" since wipe and make again the partition system and install all the stuff, now works pretty well but they make a warning to me abut future deads because the final solution and the real one that needs my phone is to change the motherboard (they don't change just the emmc).
But if your emmc is ok, they probably just need to use riffbox maybe jtag but your phone will surely be ok again.
the cost for the reparation should be about 30-50 USD
If you don't know where is one of this external service centers on your town, try searching on google about riffbox, jtag service center in -your town-.
Click to expand...
Click to collapse
Thanks a lot for this much knowledge about this product. I always help my friend fixing their phones and some of my good friends pay me for that. Its kind of part time job for me. I am just crazy to try something new in this field so I am not worrying about money part right now. That is why I am just seeking information how much it will cost and from where i can get information how to use this box. I guess we need lot of new things to learn before i start using it. Please let me know whatever u know about it, I am gathering knowledge from google too and other websites , Your help so far is very much appreciated. Please let me know what else you know about these riffbox or jtag ?

Damaged internal storage, can I fix it? Only experts please

Hello
I already searched for different threads and people said you can replace the emmc (aka internal hard drive Or let's just say internal storage) of my G3 with a new one because it's damaged and my phone is literally dead.
But I took it into a repair center and they said they won't replace it's internal storage because the new emmc id does not match with CPU id and it might cause problems and after a while it gets burned again (??!!) They said that I must replace the whole board.
So is that really true? This phone could be called "OLD" by a lot of people but come on, at least it's a great phone.
The phone's guarantee expired a few months ago, so pls don't suggest the official LG repair centers since all they say is it's not worth repairing and we will only replace the board if you want.
Thank you for reading, any kind of replies will be greatly appreciated :highfive:

Bootloop

Help guys , i'm stuck with a bootloop on my g4 H815 , i figured out there's definitely no way to fix this damn phone , i even tried putting the phone in the freezer for 7 days , unfortunately that was useless , i just wanna recover my data , so if there's any way please let me know , i really can't afford to lose my data

Sisine said:
Help guys , i'm stuck with a bootloop on my g4 H815 , i figured out there's definitely no way to fix this damn phone , i even tried putting the phone in the freezer for 7 days , unfortunately that was useless , i just wanna recover my data , so if there's any way please let me know , i really can't afford to lose my data
Click to expand...
Click to collapse
SALT: full backup.
For the alternatives https://bit.do/ilapofixg4
Sent from my LG-H815 using XDA Labs

Sisine said:
Help guys , i'm stuck with a bootloop on my g4 H815 , i figured out there's definitely no way to fix this damn phone , i even tried putting the phone in the freezer for 7 days , unfortunately that was useless , i just wanna recover my data , so if there's any way please let me know , i really can't afford to lose my data
Click to expand...
Click to collapse
Watch this: https://www.youtube.com/watch?v=ZIVvk2JgKgw might work...

steadfasterX said:
SALT: full backup.
For the alternatives https://bit.do/ilapofixg4
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Just out of curiosity , why would we heat the phone instead of freezing it , it sounds rediculous , because we know the problem came from overheating in the first place , i just wanna understand !

Sisine said:
Just out of curiosity , why would we heat the phone instead of freezing it , it sounds rediculous , because we know the problem came from overheating in the first place , i just wanna understand !
Click to expand...
Click to collapse
Well it's written in the linked post.
The reason why heat CAN help is explained here https://forum.xda-developers.com/showpost.php?p=65511137&postcount=2
It will not help in all cases and its highly risky and I wouldn't do it personally but many reported that it helped them out. Toxic fumes in an oven is nothing I wanna have though...
Sent from my LG-H815 using XDA Labs

Sisine said:
Just out of curiosity , why would we heat the phone instead of freezing it , it sounds rediculous , because we know the problem came from overheating in the first place , i just wanna understand !
Click to expand...
Click to collapse
Because the problem seams to be the nano-weld between the main board, processor and ram.
So, when the area is heated over 100º (if I good remember...), and we apply pressure, the defect/broken weld gets re-welded, giving back the contact to the different components.
Someone corrects me if I'm wrong.
BTW, I don't advise to use the oven. Better a good hair dryer or a heating gun. Take care to don't heat too much. Better try several times increasing the temperature until it works, than fry the main board or other components.

The reason for heating up the mainboard is obviously mentioned by others here. It is done to REFLOW (reheating the solder to help better join the components together) the board, thus making it work again. Some folks also add additional things like a super-thin copper sheet and a super-thin thermal tape to help better deal with heat management, and prolong the device.
If you're going to reflow it, better use a heat gun, or a hair dryer for a very long time if you don't have a heat gun.

RuedasLocas said:
Because the problem seams to be the nano-weld between the main board, processor and ram.
So, when the area is heated over 100º (if I good remember...), and we apply pressure, the defect/broken weld gets re-welded, giving back the contact to the different components.
Someone corrects me if I'm wrong.
BTW, I don't advise to use the oven. Better a good hair dryer or a heating gun. Take care to don't heat too much. Better try several times increasing the temperature until it works, than fry the main board or other components.
Click to expand...
Click to collapse
Another thing please , is storage chip integrated on the main motherboard , you know just in case the heating thing doesn't work , i would definitely go for another motherboard to save my precious data !

Sisine said:
Another thing please , is storage chip integrated on the main motherboard , you know just in case the heating thing doesn't work , i would definitely go for another motherboard to save my precious data !
Click to expand...
Click to collapse
See this picture: https://d3nevzfk7ii3be.cloudfront.net/igi/YdWD2sSRT6Xmbif6.huge the orange square is the "Toshiba THGBMFG8C4LBAIR 32 GB NAND Flash".
Now you know where it is
Take care while heating the cpu. Create some kind of barrier with something to avoid damage on other components.

Sisine said:
Help guys , i'm stuck with a bootloop on my g4 H815 , i figured out there's definitely no way to fix this damn phone , i even tried putting the phone in the freezer for 7 days , unfortunately that was useless , i just wanna recover my data , so if there's any way please let me know , i really can't afford to lose my data
Click to expand...
Click to collapse
If the video don't play, here is the link: https://www.youtube.com/watch?v=ZIVvk2JgKgw