Develop Bugs

[Q] odin says" Can't open the serial(COM) port." and fails to flash recovery.tar

[Q] odin says" Can't open the serial(COM) port." and fails to flash recovery.tar
hey,...
i am trying to root my tmobile galaxy S2 and i am in downloading mode...put recovery.tar file in PDA section and when i hit start...nothing happens and after a while i get failed notice and says " Can't open the serial(COM) port." what am i doing wrong.

Did you install the usb drivers first? If not here:
http://www.mediafire.com/?6onrjbyd46j4lhj
that could be the only reason i can think of that odin isn't detecting phone. Also try a different usb port on the computer, and if that doesn't work try a different cable.

uninstall Kies if u have ut because the drivers stick i did and now it works lol

hlimbu00 said:
hey,...
i am trying to root my tmobile galaxy S2 and i am in downloading mode...put recovery.tar file in PDA section and when i hit start...nothing happens and after a while i get failed notice and says " Can't open the serial(COM) port." what am i doing wrong.
Click to expand...
Click to collapse
Darkshado said:
Kies could be interfering with Odin ...
Click to expand...
Click to collapse
I too was having "Can't open the Serial COM". Kies was interfering.
Go into Kies, Tools -> Preferences, unselect "Run Samsung Kies automatically when a device is connected", save the change, close out of Kies, and then restart ODIN 3. Try flashing now.

reinstall drivers with KIES. go to troubleshoot and then you should be good to go after. also check the cable too..

hlimbu00 said:
hey,...
i am trying to root my tmobile galaxy S2 and i am in downloading mode...put recovery.tar file in PDA section and when i hit start...nothing happens and after a while i get failed notice and says " Can't open the serial(COM) port." what am i doing wrong.
Click to expand...
Click to collapse
also sometimes you have to try a different version of odin before it works it happens to me alot. one odin wont work but another does. it's crazy.

Can't open the serial(COM) port Error
hlimbu00 said:
hey,...
i am trying to root my tmobile galaxy S2 and i am in downloading mode...put recovery.tar file in PDA section and when i hit start...nothing happens and after a while i get failed notice and says " Can't open the serial(COM) port." what am i doing wrong.
Click to expand...
Click to collapse
I had the same problem and I fixed it by exiting from Kies software. You might get this new error "Complete(Write) operation failed". Then all you should do is just pulling your battery out and restarting odin and phone. I disables the firewall too, but I don't think the problem was firewall. Anyway mine is working well and I did it.

Hi, I'm also having the same problem. The 'Charging paused...' message kept popping up so I tried to flash a different official rom via odin (I was on official ICS). Unfortunately the flash failed and now when I try to turn on the phone the 'Firmware upgrade encountered an isuue......' message comes up. I tried connenting to kies also but can not to do so. I have hope as i can get into download mode but can't flash a rom. I got halfway once then suddenly it failed again. Your help is much appreciated. Thanks in advance.

Thank You.
phi11yphan said:
I too was having "Can't open the Serial COM". Kies was interfering.
Go into Kies, Tools -> Preferences, unselect "Run Samsung Kies automatically when a device is connected", save the change, close out of Kies, and then restart ODIN 3. Try flashing now.
Click to expand...
Click to collapse
Thank You.
disabled Kies and problem solved

iNeedICS said:
uninstall Kies if u have ut because the drivers stick i did and now it works lol
Click to expand...
Click to collapse
Thanks, this is what was causing me this error. I was close to Hulk-smashing expensive things :laugh:

Re: [Q] odin says" Can't open the serial(COM) port." and fails to flash recovery.tar
NomadRip said:
Thanks, this is what was causing me this error. I was close to Hulk-smashing expensive things :laugh:
Click to expand...
Click to collapse
Haha yea don't resort to hulk smashing things lol just send them to me instead of breaking them I'll delightfully take them off your hands! I'll pm you my address so you can ship xD jkjklolol
Sent from Squishy's N⁴!

This worked for me
I had the same exact problem (but this was on my Galaxy Y )
What I had was an old version of KIES (~ 2011 ).
Steps :
1) Uninstall the old Kies
2) Download the latest Kies (2013)

I have installed drivers but i cant connect my phone to pc when odin mode is on in phone but i can connect phone to pc when bootloader is on or recovery mode is on . However, when i boot into recovery mode and connect phone to pc and open odin and start it ,it shoes cant open the serial (com) port.
what to do
I'm flashing stock software to phone as my phone got bricked, hurry please help me to unbrick

ttffjioo said:
I have installed drivers but i cant connect my phone to pc when odin mode is on in phone but i can connect phone to pc when bootloader is on or recovery mode is on . However, when i boot into recovery mode and connect phone to pc and open odin and start it ,it shoes cant open the serial (com) port.
what to do
I'm flashing stock software to phone as my phone got bricked, hurry please help me to unbrick
Click to expand...
Click to collapse
The phone needs to be in download mode for Odin. And kies shouldn't be running on your PC. Go to task manager and kill any kies processes.
Download mode on the phone as I remember is power button and volume down.
?

If anyone is using Odin to flash 4.1.2, I found either Odin 3.04 or to be the only ones that worked for me.

Darth said:
The phone needs to be in download mode for Odin. And kies shouldn't be running on your PC. Go to task manager and kill any kies processes.
Download mode on the phone as I remember is power button and volume down.
Click to expand...
Click to collapse
when my phone is on download mode for odin, it cant connect to pc as yellow border line is not showing on odin . I have uninstalled my kies.
tell me what to do

ttffjioo said:
when my phone is on download mode for odin, it cant connect to pc as yellow border line is not showing on odin . I have uninstalled my kies.
tell me what to do
Click to expand...
Click to collapse
Try different Odin versions perhaps. Uninstall Samsung drivers and install the newest kies again to reinstall them. Don't need to uninstall kies , just be sure all its processes are killed in your PC task manager.
There's nothing you can do until your phone and Odin are communicating. Try another cable, try another USB port on your computer. Last, try another computer.

Darth said:
Try different Odin versions perhaps. Uninstall Samsung drivers and install the newest kies again to reinstall them. Don't need to uninstall kies , just be sure all its processes are killed in your PC task manager.
There's nothing you can do until your phone and Odin are communicating. Try another cable, try another USB port on your computer. Last, try another computer.
Click to expand...
Click to collapse
I have downloaded latest kies 3 from official website with latest drivers
I uses cable of my tab 4 (which easily get connects with pc with its cable) to connect my y duos to pc.
Am i doing any thing wrong?

ttffjioo said:
I have downloaded latest kies 3 from official website with latest drivers
I uses cable of my tab 4 (which easily get connects with pc with its cable) to connect my y duos to pc.
Am i doing any thing wrong?
Click to expand...
Click to collapse
Try everything I suggested. Otherwise, I'm out of ideas unfortunately.
I'm curious, what does your phone show as in device manager in pc when connected? Or is it not being seen at all?
And Y Duos? You know this is the Tmobile S2 section, right? ?

Lots of Y Duos bricked talk here as well as other links in this thread to review.
http://forum.xda-developers.com/showthread.php?t=2275057

[Q] Sprint S3 seems to be unrootable

my phone seems to be unrootable. I have tried everything, but I always get a write fail message after hanging at "Setup Connection" in Odin for a few minutes. My phone is recognized by my computer, I am able to drag and drop files to it. When plugged into Odin I am able to see the COM message. My phone does seem to have a hard time connecting to Kies, I believe it only connected to the software once.
Any solutions anyone?

If you're using ODIN, then uninstall Kies. It interferes with ODIN.
Also try switching cables, USB ports, and computers if possible.

NeedHelpNow said:
my phone seems to be unrootable. I have tried everything, but I always get a write fail message after hanging at "Setup Connection" in Odin for a few minutes. My phone is recognized by my computer, I am able to drag and drop files to it. When plugged into Odin I am able to see the COM message. My phone does seem to have a hard time connecting to Kies, I believe it only connected to the software once.
Any solutions anyone?
Click to expand...
Click to collapse
You can check HERE for more info on how to accomplish what you want to do. You can also use the S3 TOOLKIT. Lastly when in doubt you can check out THIS thread. If all else fails there's always THIS method .

Tried your suggestions already
prboy1969 said:
You can check HERE for more info on how to accomplish what you want to do. You can also use the S3 TOOLKIT. Lastly when in doubt you can check out THIS thread. If all else fails there's always THIS method .
Click to expand...
Click to collapse
Yeah did everything you listed, except for the toolkit. One thing I am noticing when I have my phone in download mode and it is plugged into the computer it registers as MSM8960, which from my search on google seems to be a chipset.
Thanks for the reply CNexus and prboy1969

Im curios to know if you unistalled the drivers and installed them again.
Sent from my SPH-L710 using xda premium

http://forum.xda-developers.com/showthread.php?t=1963812

Have you tired throwing it out a 3rd floor window. I heard that works.
http://i1202.photobucket.com/albums/bb374/TexasEpic/ThePeoplesROM-KennyGlass123/daniel4653.png

NeedHelpNow said:
Yeah did everything you listed, except for the toolkit. One thing I am noticing when I have my phone in download mode and it is plugged into the computer it registers as MSM8960, which from my search on google seems to be a chipset.
Thanks for the reply CNexus and prboy1969
Click to expand...
Click to collapse
One thing I would check is your USB mode may be set to debug. Look for the S3 dialer codes and find the one that changes the USB mode and switch it to PDA (I believe). If its on modem/debug or whatever else it may be the cause.
*EDIT: I think this may be why it shows up a MSM8960. I just tested my sprint S3 in odin mode and it shows up as "Samsung Mobile USB CDC Composite Device"
I would also suggest running the connection troubleshooter in KIES which re-installs the drivers. In my experiences KIES does not cause a conflict with ODIN (I've had both installed with no issues during my time with the S2 and S3).
Finally, reboot both the phone & PC, and try again. If it still fails swap out your USB cable.

rocket321 said:
One thing I would check is your USB mode may be set to debug. Look for the S3 dialer codes and find the one that changes the USB mode and switch it to PDA (I believe). If its on modem/debug or whatever else it may be the cause.
*EDIT: I think this may be why it shows up a MSM8960. I just tested my sprint S3 in odin mode and it shows up as "Samsung Mobile USB CDC Composite Device"
I would also suggest running the connection troubleshooter in KIES which re-installs the drivers. In my experiences KIES does not cause a conflict with ODIN (I've had both installed with no issues during my time with the S2 and S3).
Finally, reboot both the phone & PC, and try again. If it still fails swap out your USB cable.
Click to expand...
Click to collapse
In the past on older phones when I used a desktop the front usb ports wouldn't work had to use the back usbs. Try a different port?
Sent from my blue galaxy

You're in download mode and you've flashed the custom recovery right? Do a Google search of "how to root sprint Galaxy s3 androidcentral" and obviously click the one that says androidcentral
Sent from my SPH-L710 using xda app-developers app
---------- Post added at 01:36 AM ---------- Previous post was at 01:32 AM ----------
Here's a link instead -
http://forums.androidcentral.com/sp...e-updated-how-root-your-sprint-galaxy-s3.html
Sent from my SPH-L710 using xda app-developers app

Follow whatever guide your using for how to use Odin.
Ie: just put the md5 file where its says PDA..
Put your phone in download mode..
Pull battery.. Put back.. Hold vol.down home and power..
Then at prompt push vol.up.
Phone will show I'm download mode.
The file.I would push is twrp.
The 2.5.0.0 works well on most all I do.
Once you have your custom recovery to install
Zips your good to go..
Just push the recovery and reboot the phone back into
The recovery mode..you shouldnt get errors.. I would say
To make sure your using a newer version of Odin and if you've
Messed with drivers always reboot PC.!!
Volume up.. Home and power this time..
And Go to recovery and flash whatever rooted ROM you want.

I'm good on computer anatomy and the ones in the back are usually fast, they are directly on the mobo
Sent from my SPH-L710 using xda app-developers app

Team DevDigitel said:
Follow whatever guide your using for how to use Odin.
Ie: just put the md5 file where its says PDA..
Put your phone in download mode..
Pull battery.. Put back.. Hold vol.down home and power..
Then at prompt push vol.up.
Phone will show I'm download mode.
The file.I would push is twrp.
The 2.5.0.0 works well on most all I do.
Once you have your custom recovery to install
Zips your good to go..
Just push the recovery and reboot the phone back into
The recovery mode..you shouldnt get errors.. I would say
To make sure your using a newer version of Odin and if you've
Messed with drivers always reboot PC.!!
Volume up.. Home and power this time..
And Go to recovery and flash whatever rooted ROM you want.
Click to expand...
Click to collapse
I have done everything you listed. Here is a question for you. When your phone is in download mode and you plug it in to the computer, what does it register as under Device & printers. I stated this before, but when I plug my phone in, it comes up as MSM8960. I did the S3 dialer code thing and all looks good, the phone is set to PDA and Qualcomm USB Settings are set to MTP+ADB (Thanks rocket321 for your assistance on that.)

Have you tried this method. It never fails comes with video and everything
http://qbking77.com/how-to-root/root-samsung-galaxy-s-iii/
Transmitted with a portable device using Xparent Blue Tapatalk 2

Tried that
edfunkycold said:
Have you tried this method. It never fails comes with video and everything
http://qbking77.com/how-to-root/root-samsung-galaxy-s-iii/
Transmitted with a portable device using Xparent Blue Tapatalk 2
Click to expand...
Click to collapse
I tried that tutorial, as a matter a fact that was the first one I used. When I check what drivers are being installed I see "SAMSUNG Mobile USB CDC Composite Device" and "SAMSUNG Mobile USB Modem #3" the #3 I am guessing is the USB port for which I am connected to (This number changes with every port when my device is connected to the computer). Does anyone get the same exact messages when they plug in their phone and drivers began to install? Odin Message below:
<ID:0/005> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> CWM-Recovery-LTE-SGS3-v5.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/005> Odin v.3 engine (ID:5)..
<ID:0/005> File analysis..
<ID:0/005> SetupConnection..
<ID:0/005> Complete(Write) operation failed.
<ID:0/005> Added!!
<OSM> All threads completed. (succeed 0 / failed 1)

What Operating System is on your Desktop / Laptop?
TEAM MiK
MikROMs Since 3/13/11

NeedHelpNow said:
I tried that tutorial, as a matter a fact that was the first one I used. When I check what drivers are being installed I see "SAMSUNG Mobile USB CDC Composite Device" and "SAMSUNG Mobile USB Modem #3" the #3 I am guessing is the USB port for which I am connected to (This number changes with every port when my device is connected to the computer). Does anyone get the same exact messages when they plug in their phone and drivers began to install? Odin Message below:
<ID:0/005> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> CWM-Recovery-LTE-SGS3-v5.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/005> Odin v.3 engine (ID:5)..
<ID:0/005> File analysis..
<ID:0/005> SetupConnection..
<ID:0/005> Complete(Write) operation failed.
<ID:0/005> Added!!
<OSM> All threads completed. (succeed 0 / failed 1)
Click to expand...
Click to collapse
As everything seems to be going right up until the flash, I might suggest you try flashing a different file.
Try CF-Auto-Root from the 3rd post in this thread: http://forum.xda-developers.com/showthread.php?t=1963812
Make sure you unzip to the .tar.md5 file and try flashing that in the PDA slot in Odin.
If that works you will have stock recovery but rooted ROM. From there you can use Mobile Odin to flash a customer recovery assuming you would like to have CWM or TWRP.

Windows 7
prboy1969 said:
What Operating System is on your Desktop / Laptop?
TEAM MiK
MikROMs Since 3/13/11
Click to expand...
Click to collapse
Windows 7

NeedHelpNow said:
Windows 7
Click to expand...
Click to collapse
So the Samsung drivers do install when you connect the phone to the PC? If that step is OK then have you tried a different USB port and a different USB cable? When Odin fails it is almost always a problem with the USB cable.
I have this same phone and I followed the QBKing77 video with no issues. It worked flawlessly but in the past Odin issues ended up being the USB cable.

NeedHelpNow said:
Windows 7
Click to expand...
Click to collapse
Have you made sure that the drivers are installed as suggested above. Also I'm not sure if I mentioned this. But I've had similar weirdness from using a bad USB Cable.
TEAM MiK
MikROMs Since 3/13/11

[S5360] Phone fell down when loading firmware

I have a problem I wanted to write it soft to the phone and fell down while uploading cyg7 shows the system and swap partitions May -1 odin sees him undergo a mode other than download someone odin in donwload mode does not see the phone sees it as the phone hangs on logo samsungcould I help

follow instructions on how to use odin and download firmware
http://forum.xda-developers.com/showthread.php?t=2568853
questions go in Q & A Section NOT General section!!

Too bad english
Please write in a better way for us to understand what you mean. I hope you understand.

Oh and i had this problem it is easy fixable.This is caused when you dont install the Android Version good and it gets stuck on it.
Just use the older Odin method or swap android versions.

has anyone pit file ?
and I still have the question odin does not see my phone in download mode only when the phone hangs on samsung logo. and now the question is if we can somehow write it this soft?

ccrash said:
has anyone pit file ?
and I still have the question odin does not see my phone in download mode only when the phone hangs on samsung logo. and now the question is if we can somehow write it this soft?
Click to expand...
Click to collapse
you dont need the pit file unless you have used a wrong pit file in the past
like I said - follow the instructions on my firmware thread
make sure you have samsung usb drivers installed
use rear usb ports if on pc
use the firmware thats on my thread and use a wipe pack (says wipe in filename)

screen when i start recovery and instalation cyng
and stupid forum i cant post screen nice

ccrash said:
screen when i start recovery and instalation cyng
and stupid forum i cant post screen nice
Click to expand...
Click to collapse
if you dont use a wipe pack from my thread you need to wipe data/reset after flashing a firmware in stock recovery
also without a full explanation in understandable english I cant give you anymore support other than fully read the instructions on my firmware thread at the top of the dev section for 5360 and download and use a firmware with the word wipe in the filename

So yes odin does not see the phone in download mode but my windos in the Device Manager shows the device is samsung mobile usb cdc composite device what I am doing wrong?

I think drivers is not instal correctly
ccrash said:
So yes odin does not see the phone in download mode but my windos in the Device Manager shows the device is samsung mobile usb cdc composite device what I am doing wrong?
Click to expand...
Click to collapse
1,Please make sure that drivers install correctly on your operating system (uninstall and reinstall)
2,Try to change Usb Cable
3, check shocket "charger pin" working or not

No EMMC firm code in odin mode

Hey guys, im new with this model.
A friend apply a OTA to this phone and now the phone dont boot, in odin the EMMC firm is [] (nothing in).
Odin cant load a rom to the phone now, im ****ed, not with PIT file. Stuck in setup conection or writting NAND followed by a huge fail.
Someone with a suggestion?
Thanks.

Reflash it with the same or older ROMs, better go for the older ones.
If you get this error then your PIT is damaged
<ID:0/009> There is no PIT partition.
Then you need to flash with the .pit file,
This should be done only if, it is that much essential.
1. Connect phone to PC and see it gets detected.
2. Click on the PIT button and browse for the .PIT file in the zip
3. Click on PDA and browse for the original firmware file (
4. Ensure that all three check boxes, i.e. Auto Re-boot, Re-Partition, F. Reset Time are selected (checked). Re-Partition shoul be selected only if u have selected PIT file
See This thread to download PIT file thanks to DMJoh

I tried with PIT, but Odin show me:
Writing NAND.
FAIL!
Without PIT odin stuck at "setup conection" message.
Downloading a old rom to try. But i think the emmc die.
Thanks.

1. Was USB Debugging enabled on your device?
2. You got the latest Samsung drivers installed on your pc?
3. Did you make sure Samsung kies is not running in the system tray?
4. Make sure any antivirus or firewalls are switched off.

1 . Phone dont boot.
2. Yeah i installed that stuff yesterday.
3.kies closed.
4.no antivirus on my pc

coldrazor said:
1 . Phone dont boot.
2. Yeah i installed that stuff yesterday.
3.kies closed.
4.no antivirus on my pc
Click to expand...
Click to collapse
Hi,
Use diff USB cabel and Diff USB port and try again sometimes problem will with cable or port though it detects in PC probs will occur on flashing

I tried in two more pcs with diferent cables but nothing, sadly i think the phone is dead, maybe with a box.

S9+ U1 Flash Instant Odin Error

So, originally my phone was ATT or Tmobile (I forget now), I flashed to U1 and stayed there for quite awhile. Then some months back I flashed to a Sprint U version. OTAs and everything worked. But Sprints version is missing some stuff that I came to love on the unlocked version.
I'm trying to go back to the U1 US unlocked (which is XAA region), and my boot loader is v7, and so is the U1 firmware I'm trying to flash with patched odin. I have USB Debugging enabled, removed the lockscreen and any sorts of locks.
My Sprint version is G965USQS7CSJ7, and the Unlocked I'm trying to go to is G965U1UEU7CSK1. I go into download mode/flash mode or what ever as usual, connect phone with the latest Samsung USB drivers installed with patched odin already open, its detected as 0:[COM3] in a cyan/light blue. I add the:
BL_G965U1UEU7CSK1
AP_G965U1UEU7CSK1
CP_G965U1UEU7CSK1
CSC_OMC_OYM_G965U1UEU7CSK1,
and after they all finish doing their checks, I start it, and It instantly stops.
Code:
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/003> Odin engine v(ID:3.1301)..
<ID:0/003> File analysis..
<ID:0/003> Total Binary size: 6714 M
<ID:0/003> SetupConnection..
<OSM> All threads completed. (succeed 0 / failed 1)
Am I missing something?
Edit: I downloaded patched odin again, and the firmware. Still the same error.
Edit 2: I tried to reflash my current firmware as well. Same issue.
Edit 3: Reinstalled USB drivers and ADB. Still nothing.
Final Edit: Issue solved. It was an issue specific to Ryzen CPUs. Just do it via what ever Intel system you have.

ReapersDeath said:
So, originally my phone was ATT or Tmobile (I forget now), I flashed to U1 and stayed there for quite awhile. Then some months back I flashed to a Sprint U version. OTAs and everything worked. But Sprints version is missing some stuff that I came to love on the unlocked version.
I'm trying to go back to the U1 US unlocked (which is XAA region), and my boot loader is v7, and so is the U1 firmware I'm trying to flash with patched odin. I have USB Debugging enabled, removed the lockscreen and any sorts of locks.
My Sprint version is G965USQS7CSJ7, and the Unlocked I'm trying to go to is G965U1UEU7CSK1. I go into download mode/flash mode or what ever as usual, connect phone with the latest Samsung USB drivers installed with patched odin already open, its detected as 0:[COM3] in a cyan/light blue. I add the:
BL_G965U1UEU7CSK1
AP_G965U1UEU7CSK1
CP_G965U1UEU7CSK1
CSC_OMC_OYM_G965U1UEU7CSK1,
and after they all finish doing their checks, I start it, and It instantly stops.
Am I missing something?
Edit: I downloaded patched odin again, and the firmware. Still the same error.
Edit 2: I tried to reflash my current firmware as well. Same issue.
Edit 3: Reinstalled USB drivers and ADB. Still nothing.
Click to expand...
Click to collapse
If your stuck on setup connection on Odin some things to try assuming using windows
Use Odin 3.13.1 ( or modified Odin 3.13.1B )
If you have smart switch/Kies install, un-install it.
USB cable i'm assuming is a data cable.
USB port try plugging into USB 2 port.
Plug phone directly into PC not any hubs.
Use latest Samsung USB drivers.
Run Odin in administrator mode.
Boot into download mode then reboot back into download mode again.
Maybe turn off any anti-virus/firewall programs.
Maybe plug/unplug leads a few times
Try a different PC.
These are a few things to try ( and some you've already tried ) as failing at setup connection can be a common issue with some people and can vary with the PC.

spawnlives said:
If your stuck on setup connection on Odin some things to try assuming using windows
Use Odin 3.13.1 ( or modified Odin 3.13.1B )
If you have smart switch/Kies install, un-install it.
USB cable i'm assuming is a data cable.
USB port try plugging into USB 2 port.
Plug phone directly into PC not any hubs.
Use latest Samsung USB drivers.
Run Odin in administrator mode.
Boot into download mode then reboot back into download mode again.
Maybe turn off any anti-virus/firewall programs.
Maybe plug/unplug leads a few times
Try a different PC.
These are a few things to try ( and some you've already tried ) as failing at setup connection can be a common issue with some people and can vary with the PC.
Click to expand...
Click to collapse
Have unfortunately done all of those listed minus the different computer thing which I'm transferring files for now.. Also its Odin 3.13.1_3B. I looked around and there's a good chance its a current Ryzen CPU issue.
Edit: Did appear to be a Ryzen issue. It worked smoothly on an Intel laptop.

ReapersDeath said:
Have unfortunately done all of those listed minus the different computer thing which I'm transferring files for now.. Also its Odin 3.13.1_3B. I looked around and there's a good chance its a current Ryzen CPU issue.
Edit: Did appear to be a Ryzen issue. It worked smoothly on an Intel laptop.
Click to expand...
Click to collapse
Glad it worked. It maybe with certain types of PC's out there. No issues on my HP laptop.

Ran into issues flashing XAA software on odin. Same problem, constantly failed on a Ryzen PC, tried it on an intel laptop and voila, it worked flawlessly. Thanks Reapersdeath for posting this solution.