[Samsung Galaxy S9+ Questions & Answers] Jason_AZ:
Hello, I am trying to update the firmware on my phone.

Bottom line up front is that I'm getting the:

"<ID:0/006> Can't open the serial(COM) port" from Odin.

I've read this is usually a communications issue, but I'm curious why I can connect the PC to the phone when the phone is in it's normal mode and move files between the PC and the phone, but it seems to have a connection problem when Odin is running.

I'm looking for any suggestions to be able to complete the update.

Details follow:

The phone is an Galaxy S9+ G965U

Product code	VZW

I am trying to install:

G965USQS8FTJ6

When I run Smartswitch, it claims the device is up to date and no update is required.

When I check for a system update on the phone, it says it is up to date and no update is required.

I used Frija to download the lastest firmware:

SM-G965U_2_20201106184604_qnk441l2qh_fac.zip which is Android 10, Product code VZW.

System update history shows G965USQS7CSK4.

The baseband version g965usqs7csk4

I start Odin on the PC.

I reset phone to Odin mode.

One thing to note is that the Odin display on the phone screen is normal brightness for a moment and then it dims.

"KG STATUS: Checking" never changes.

The ID:Com lights up blue "Added!"

I Add BL, AP, CP, CSC, USERDATA to Odin fields

I am using the original cable included with the phone.

I can connect the phone to my PC and move files on/off phone.

Odin text string from failed attempt:

<ID:0/006> Added!!

<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..

<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:0/006> Odin engine v(ID:3.1401)..

<ID:0/006> File analysis..

<ID:0/006> skip file list for home binary

<ID:0/006> apdp.mbn

<ID:0/006> msadp.mbn

<ID:0/006> persist.img.ext4

<ID:0/006> dqmdbg.img.ext4

<ID:0/006> carrier.img.ext4

<ID:0/006> userdata.img.ext4

<ID:0/006> Home Binary Download

<ID:0/006> Total Binary size: 5597 M

<ID:0/006> SetupConnection..

<ID:0/006> Can't open the serial(COM) port.

<OSM> All threads completed. (succeed 0 / failed 1)

<ID:0/006> Removed!!

If I remove and insert USB to phone, while Odin is running, Windows claims USB device not recognized.

If I remove and insert USB to phone, while the phone is in it's normal mode, Windows immediately recognized the device and opens file explorer.

I'm curious why I can connect the PC to the phone when the phone is in it's normal mode and moves files around, but it seems to have a connection problem when Odin is running.

I have enabled developer mode.

I have turned on USB debugging.

OEM debugging is not yet available. I don't know if I need this or not for a Samsung released firmware version. :confused:

Phone information shows:

One UI: 1.0

Android Version 9

Baseband Version G965USQS7CSK4

Service Provider SW version: SA)MC_SM-G965U_OYN_VZW_PP_0050

VZW/VZW/VZW

I removed the Samsung USB driver from PC and reinstalled the latest (1.7.23.0, I hope).

I've read that USB 3.0 can be a problem, and USB 2.0 is preferable but my PC only has USB 3.0. Has anyone had success with USB 3.0?

I've tried this with Odin 3.11.1, 3.12.7, 3.13.1, 3.14.1, 3.14.4 because I read that sometimes a different version of Odin will succeed where another failed.

I have uninstalled KIES and restarted the PC so I know KIES is not running.

"Verizon Wireless Software Upgrade Assistant - Samsung" is not running

"Verizon Wireless Software Utility Application for Android - Samsung" is not running.

"Smart Switch" is not running.

Thank you in advance for suggestions.