Ever tried JTAG unbrick recovery?
- Thread starter AdamOutler
- Start date
Hi, you should contact @connexion2005 aka MobileTechVideos.com about this. There are no quick answers on lower volume devices. However, JTAG will usually work.
Thank you @AdamOutler, I just wrote him a PM. What do you mean with "lower volume devices"? Do you have a manual for me on how to construct a universally useable JTAG for not so much money?
Well, you know.. There wasnt alot of those devices sold. There arent any "universal" solutions. Its done per-device.
BTW, awesome job on the catcher. I have it installed on this device. Any chance of including a default ID api key?
Interesting. I thought that I coild build something like a RIFF box and then reflash the corrupted files?
Oh, thank you so much for telling me! Hope that @E:V:A and @He3556 as well as @TobyKurien will pick this up as well. [emoji6]
What exactly do you mean by "default ID API key"? If you mean the OpenCellID issue, we are currently working on a better solution since OpenCellID is placing restrictions (certain amount of necessary data submissions) on us that we would like rule out. We will likely set up our own services, expexct that in the upcoming version. Hey, may I ask you which source you've installed our App from? Don't hesitate to contribute on our GitHub, we are searching for developers.
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You woudn't want to build a RIFF box. You could buy one. They may or may not have the module for your device. The way RIFF works is they actually create a module for each device. This is why I mentioned Josh Groce at MobileTechVideos.com. He has several methods and if one doesn't work, he can move to the next. He can even remove and rewrite NAND/EMMCs
Yeah, OpenCellID API key. You should coordinate with them since you are obtaining data which may be useful to them as well. Apparently you have some major players on your side which could help out.
I'm pretty busy on what I'm doing right now. I am backlogged on CASUAL and I've been working on CASUALWear more recently. I also have many other projects which I am expected to partake in... It's just too crazy for me to take on any more.
That dounds great, @AdamOutler. Could you do me the favor of getting me touch with him? I would like to give back the working device to my brother until christmas as a suprise. I will even pay for this thing to be repaired!
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anyone can help to make a script for flashing boot with openocd<?..its a ARMv7 NANDFLASH with dead boot??..its a Hisense eg909.or Andromax AD683G..thanks
Samsung Galaxy Nexus I9250 want to try JTag
Hello, first thing, the phone is completely dead, jig doesn't work.
I read through this thread, and some others, and since I'm not really the tech guy about this stuff, I would like to know what do I need for homemade JTag, I know about the serial port, I have recovery .dll for the phone downloaded.
Do I need to have Riff box now? Or can i just solder the serial cable to phone and reflash the chip with a program? which program? If anyone can explain briefly how this procedure should work, or post a link to some detailed information maybe I would be grateful. Thanks
Hello, first thing, the phone is completely dead, jig doesn't work.
I read through this thread, and some others, and since I'm not really the tech guy about this stuff, I would like to know what do I need for homemade JTag, I know about the serial port, I have recovery .dll for the phone downloaded.
Do I need to have Riff box now? Or can i just solder the serial cable to phone and reflash the chip with a program? which program? If anyone can explain briefly how this procedure should work, or post a link to some detailed information maybe I would be grateful. Thanks
Hi, mind if I ask you where exactly? Your link doesn't seem to link anywhere I'm afraid :/
nageswarswain
Senior Member
Xperia s
Hey guys I found this thread today. I have a bricked Xperia s since 1 year. Is it possible to repair. I don't know more about things you discussed here. My device is bricked by erased emmc. Waiting for any response.
Hey guys I found this thread today. I have a bricked Xperia s since 1 year. Is it possible to repair. I don't know more about things you discussed here. My device is bricked by erased emmc. Waiting for any response.
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14I bricked my captivate last night. It is possible to recover a black-screen bricked Captivate with JTAG. I was reading about using JTAG and it seems that RIFF is the most supported option. Basically, you use JTAG as a special serial device where you can send data directly to the board. It's how they load it at the factory.
I want to come up with a way to unbrick a captivate, but I don't want to spend $150 on a RIFF. It seems like overkill for such a small job. You can make a JTAG connection with 4 resistors and a parallel cable. I don't have a parallel cable on my computer.
Here's a pinout.
You can make your own JTAG (see attached file )
While I don't have a parallel port, I do have an Arduino. It is possible to set it up as a JTAG with a small bit of code.
I keep getting this question.. where can I get the parts and how do I do this? Well, you will get the parts from this post and I don't have any good recommendations about an interface board.
I'd have to say that this method is doable by anyone who knows how to use a solder and flux well.
You will need
Header: http://www.mouser.com/ProductDetail/Panasonic/AXT612124/?qs=2rFUEsTwVNwSdqVM5XnLHw==
Receptical:http://www.mouser.com/ProductDetail/Panasonic/AXT512124/?qs=2rFUEsTwVNy9TGVyeT43Dg==
Soldering iron
Solder
desoldering sucker (just in case)
Flux
Sponge
super glue
alcohol
sewing needle
tweezers
How to apply the header:
1. flux the pads on the board
2. clean the iron with a sponge
3. apply a bead of solder to the tip of your iron
4. drag the soldering iron lightly across the board until the solder beads up on top of the pads (DO NOT TOUCH THE IRON TO THE PADS, they can be lifted) to tin the pads
5. apply flux to the header
6. tin the header
7. set tinned header on top of tinned pads
8. clean the soldering iron
9. carefully depress the individual pins on the header with the hot, clean, soldering iron
10. use a magnifying glass to verify all connections are against the board.
11. using a needle, apply superglue to the corners of the header
12. wait 1 hour
13. Clean with alcohol
As I said before, I got the receptacle board from "k-ww" on forums.hackaday.com
The receptacle installs the same way. You will need 30awg wire for the receptacle board breakout. You can see how I did it above.
In this picture the closest side has been cleaned with alcohol. The far side has burned flux on it.
I'm wondering what files do you send to the JTAG port? I suppose I'll find out soon enough. I purchased a spare phone today and I've got a development Captivate on the way. I will be attempting to pull the JTAG flash out of the phone if there isn't one available on-line somewhere.2For reference, the contacts on this are about the size of the "I" on "In God We Trust" on a USA dime (10 cents).
I just used a microscope to obtain this picture today.
2Sure that is understandable. I can promise you that you won't repair this device without most likely 100+ hours of research though. This of course if you can repair it at all. There is a reason why we hold the key to such solution for months before anyone else discovers them. This reason is that it is NOT easy to solve...
Good luck!
Edit: This of course being if you are truly hard bricked (JIG won't work).1Hmm, I have never bricked my cappy (knock on wood, lol) and I have never messed with jtag. But I have read on this forum that you can make a simple jig with three one hundred ohm resistors that will boot the phone into download mode. Again, I haven't bricked my phone, so I am not sure if this would work with a black screen bricked phone, but it seems simple enough, and cheap enough, to test. Basically, you take three 100ohm resistots and wire them together. Then, you touch the leads to pin 4&5 of the micro usb connector. This is supposed to boot the phone into download mode. From there, you can hook your phone to your computer via usb and use odin or a similar tool to flash back to stock. Again, I am fairly new and have never tested this personally, so I don't know if it works at all, or if it will work with a black screen bricked phone. I hope this does help you out, though!
Sent from my Samsung Captivate using XDA App.
ROM: Cognition v4.1.1
Kernel: eXistZ's KB1 #5 Voodoo Sound v4, Voodoo Color, Voodoo lagfix
Modem: I897 UCJJ4 w/ HSUPA/HSDPA enabled
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