[Galaxy S6 Q&A, Help & Troubleshooting] skylirizm:
Hey all,

This is a bit of a tough one.

I do quite a bit of phone repairs and I have my own little setup for everything and etc.

I got a Samsung S6 (SM-G920P) from my local market and it had an FRP lock - which is nothing for the most part.

Not thinking correctly, I just went to my Samsung Firmware, opened an XSA ROM for 6.0.1 and connected the phone via USB and went to flash. Fail. OK why did it fail?

AH - Because I am not using the right firmware for this (Thus I was getting the custom binary blocked message).

So I downloaded a 5.1.1 ROM and 6.0.1 ROM for the G920P and began to start the process again.

Put the phone in download mode and connected it to the PC, but I got "USB Device not recognized".

I thought it was a one off problem and reconnected it and it was all good. Loaded the 6.0.1 ROM and started flashing.

Completed successfully, no problems at all.

So then trying to do the FRP bypass with an OTG USB - I found it wasn't detecting it.

Thought, well, why not go down to 5.1.1 and make my way back up.

Connected the USB Cable and nothing. Tried again. Nothing. Tried another 5 or 6 times and eventually it appeared in Odin.

Started the flashing process and half way through it, the phone disconnected and now I have the "Connect to Smart Switch" screen on the phone and now any PC with all sorts of different cables will not detect the phone at all.

However - there is still power going to the phone as it's able to charge via USB Cable with no problem at all.

Next step - I took the phone apart so I could get a look inside to see if there may have been water damage etc.

Perfectly clean inside the phone. All flex connectors are fine, no corrosion and the WDI has not been affected.

Took a lot at the USB port and it's fine. All 5 pins are present and no damage is done. Soldering *looks* OK on the PCB, but it looks secure and the phone gets power no problems, so I am at a point where I am looking at this thing going what happened?

The OTG USB I tried in a Galaxy S7 and a Nexus 5X and both came up no problems.

All my cables I have are of decent quality (I assume so :/) and work with every other device tested.

I reseated the Flex Cable inside the phone for the charging port PCB and that hasn't improved anything.

Tried different computers etc.

Tried it with Smart Switch - doesn't detect and reinstalling Device Drivers didn't work.

I don't want to take the LCD off because it's working perfectly and I don't want to break it (You all know how fragile these screens are) - because I would replace the whole charging port assembly PCB - but this is why I am here asking to see if anyone else has experienced such a weird issue and can maybe provide some sort of an explanation into what exactly might be causing the issue.

And I was going to say would heating the phone up cause any issues with soldering, but I used about 30-45 seconds of heat to the back and the back glass came off fine. My thought that I may have damaged the port with heat is probably unlikely.

I don't know guys, the phone is still on and I have put it in Download Mode as well as left it in the Smart Switch screen and tried over and over and it's just getting power and not data (COM port in Odin).

I can post some pictures of the Micro USB port, the PCB etc if need be.

If someone has a solution, I swear I will buy you a beer!

Thanks heaps!