HTC Evo 4G LTE jtag

[jeffghazaleh]

So you tried the pinout in my post and it didn't recognize them? Did you get riff to recognize the jumpers in your pic? i could of sworn that htc would of used trhat set in my pic. If you still are having problems viewing my pics, let me know i'll repost them in jpg format.

Jeff's Cell Service
Anaheim, CA, USA

[Kanishk]

yes, m still having probs in viewing attachments, must be wrong format ?

[jeffghazaleh]

im so sorry i thought you found a way to view it, here it is, good luck and tell me if it doesn't work so i can probe with riff.

htcevo4glte2.jpg

Jeff's Cell Service
Anaheim, CA, USA

[Kanishk]

Hi, thanks for the detailed picture.
I have tried with riffbox voltage probe feature. The readings m getting are
VCC & TRST = 1.82v
TDI & TMS = 0.00v
TCk & RTCK = 3.02v

All these values are taken with USB and battery connected. These values doesn't correspond according to the drawn pads i think

[jeffghazaleh]

So riff box did not give you the message "could be tdi or tdo, etc." On the pads in my picture? I am almost positive that is the right pads. They may have changed the order. I'll try probing today and see what happens. I haven't taken the evo apart yet so I'm not sure what the other side of the board looks like, but of you see a series of square pads like the one in my picture that number 10, those are for sure the jtag pads. Good luck , I will start probing today myself but I have a few clients phones I still need to ready before I can start the evo .

Jeff's Cell Service
Anaheim, CA, USA

[Kanishk]

Thanks for your input Jeff. There are not consecutive pads on the back side of the board just like other htc phones(evo 3d/sensation etc). Yes riff did not gave any probing on these points . I will be waiting for your results

[jeffghazaleh]

Kanishk, sorry for my delay, I had many parts come this week but I have not received the evo parts though, so I've had to work on other phones, as soon as it comes in , I will start on the jtag chain.

I'll keep you posted but I will probably be very busy until then, so I might not post until I have had at least one attempt at the probing. Once again, sorry for the delay, I've been to busy to even describe my probing process.

Good luck, I'll be back soon as I get the evo part.


Jeff's Cell Service
Anaheim, CA, USA

[Kanishk]

I will be waiting eagerly for that Jeff. If till then i get any update, i will post it here itself

[Kanishk]

Below are some of the voltage readings which are observed with Riff Box Voltage probe.

https://www.dropbox.com/s/reipjimu8toola4/CAM00068.jpg

http://pastebin.com/ZBw8TFcg

+C= Cable attached.
+B= Battery attached.

[Kanishk]

Enjoy Jeff

EVO_LTE_JTAG.jpg

[Abram]

Hi, thanks for posting JTAG images.

[Kingtno22]

Thank you i was looking everywhere for this

[binarytech]

Thanks for the detailed images!