[LG V60 ThinQ Questions & Answers] obana01:
Hello. I have LG V60 ATT (LMV600AM) Android 13 ver.V600AM40d it's unlocked from ATT, with exactly the same problem as in the thread below - no ringtone on incoming calls only vibration but ringtone sounds in headphone or when I'm changing it in settings/sound, and no notification sound on messages or when I select it in settings/sound. I did safe boot and factory reset - it didn't help.

No Notification Sounds

After getting android 12, I have no notification sounds. More specifically, I have no notification sounds through the phones speaker. I have sounds through the headphone jack and over Bluetooth. If I go into the sounds settings, I can change my...

xdaforums.com

So I want to try OS downgrade. I found 2 zips in forum threads below with ATT A11 versions

LMV600AM Restore/Ugrade Guide

This restore process is intended for the AT&T V60 (lmv600am) model and will WIPE your data so back it up if you want to keep it! This process will restore the lmv600am to original factory state for the AT&T v60 v20q build (a11). I’ve dumped all...

xdaforums.com

Request for Lmv600am+v10+Restore+Partitions

There was Android 10 on this forum for restoring our LG v60am (AT&T) via QFIL. I downloaded this backup but accidentally deleted it. now there is only Lmv600am+v20q+Restore+Partitions. I would like to ask people who still have android 10 to share.

xdaforums.com

Unfortunately I see QFIL sahara errors, please see attached log file - I tried this phone with 2 PCs and I have another LG V60 locked to ATT with a13 ver. V600AM40f which works fine with ringtones but shows same QFIL errors when I try to start QFIL Partition Manager to backup the phone rom

I followed the steps below from this thread https://xdaforums.com/t/tutorial-full-flash-backup-and-restore.4362809/

1. Open QFIL.

2. Change "Storage Type" to UFS.

3. Select "Flat Build".

4. Browse for Firehose file for LG V60 and pick it.

5. Now, connect the phone to PC and boot into EDL mode.

6. Open "Select Port" and select the phone, press OK.

7. In "Tools" open the "Partition Manager". Keep the "Partition Manager" for the entire process.

and in step 7 after click on Tools/Partition Manager I see Confirm dialog with

"Please make sure you have selected correct programmer file..." with OK and Cancel buttons.

I clicked on OK and after delay I see errors as in log and no Partition Manager dialog.

Here is error section from the log:

...

2023-12-17 03:53:55.147 31: mba.mbn

2023-12-17 03:53:55.148 13: X:\LG-V60\Firehose\prog__ufs_firehose_sm8250_lge.elf

2023-12-17 03:53:55.149 03:53:55: ERROR: function: sahara_rx_data:276 Unable to read packet header. Only read 0 bytes.

2023-12-17 03:53:55.151 03:53:55: ERROR: function: sahara_main:982 Sahara protocol error

2023-12-17 03:53:55.152 03:53:55: ERROR: function: main:320 Uploading Image using Sahara protocol failed

2023-12-17 03:53:55.155 Download Fail:Sahara Fail:QSaharaServer Fail: process fail

2023-12-17 03:53:55.164 Finish Get GPT

I asked already about a proper way to downgrade of V60-ATT here https://xdaforums.com/t/tutorial-full-flash-backup-and-restore.4362809/page-13#post-89221593

and got an advice to crossflash it from ATT. But that process also starts from the same QFIL connection https://xdaforums.com/t/v600am-guide-how-to-crossflash-your-at-t-v60.4535765/

So here are my questions:

1. May the old firehose file be a problem? in case this ATT A13 has a different partition configuration? Is there a new one?

2. Does it mean that ATT A13 cannot be downgraded or crossflashed via QFIL?

3. Is there another tool which may help with this ATT version, for ex Unlocktool? - I found on youtube how to backup partitions with it.

4. Is there a way to upgrade the 1st unlocked ATT phone from V600AM40d to V600AM40f version - to try to fix ringtone problem in this way? I have prepaid account with ATT and use their sim in my 2nd good locked V60 but I cannot start an update of the 1st unlocked phone with that sim - got message there is no update for your phone, maybe because its imei is not registered with ATT anymore?

Thanks a lot for your help!