can not change the USB flash access permisions

Question

i need to change the USB flash permission because i can not make new folder on it , also don't want to format it, so i have tried to use this post instruction like this:

It is not necessary to format the flash drive or to nuke the partition. You can go to mount and then change the ownership of your flashdrive. On ubuntu :

> cd /media sudo chown -R username drivename

Of course replace username by your username and drivename by the name of your flash drive.

Then you will be able to use nautilus as usual to copy/move/delete your files.

and i have done it in my os by this way:

$ sudo chown 755  $USER:$USER  .
chown: cannot access 'so:so': No such file or directory
chown: changing ownership of '.': Read-only file system

By the way my OS username is so !!! and by this code :

sudo chown -R  so .
chown: changing ownership of './baba/telegram/Telegram messenger  how to use2.mp4': Read-only file system
chown: changing ownership of './baba/telegram/How to Use Telegram.mp4': Read-only file system
chown: changing ownership of './baba/telegram/How to Use Telegram for Chat Support.mp4': Read-only file system
chown: changing ownership of './baba/telegram/How to Use Telegram for Chat Support [1080p].mp4': Read-only file system

...


chown: cannot access './fun/·'$'\033'':ZyÖ╕╪.≈'$'\030''7': Input/output error
chown: cannot access './fun/╓÷'$'\026''6Uuö┤.╙≤'$'\023': Input/output error
chown: changing ownership of './fun/╩Ω'$'\n''*Iiê¿.╟τ'$'\a': Read-only file system
chown: changing ownership of './fun': Read-only file system
chown: changing ownership of '.': Read-only file system

so why i can not have access to the Flash USB ?

Update:

based on comment of StrabagISS_Krall i have rite this code on terminal like this:

$ mount | grep media
/var/lib/snapd/snaps/ktube-media-downloader_6.snap on /snap/ktube-media-downloader/6 type squashfs (ro,nodev,relatime,x-gdu.hide)
/dev/sda6 on /media/so/EAD8A297D8A26215 type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096,uhelper=udisks2)
/dev/sda5 on /media/so/ACAC8B5FAC8B2346 type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096,uhelper=udisks2)
/dev/sdc on /media/so/09155253009 type vfat (ro,nosuid,nodev,relatime,uid=1000,gid=1000,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2)

and second comment :

 sudo journalctl | grep sdc
[sudo] password for so: 
فوریه 11 20:49:43 so-notebook kernel: sd 3:0:0:0: [sdc] 15679488 512-byte logical blocks: (8.03 GB/7.48 GiB)
فوریه 11 20:49:43 so-notebook kernel: sd 3:0:0:0: [sdc] Write Protect is off
فوریه 11 20:49:43 so-notebook kernel: sd 3:0:0:0: [sdc] Mode Sense: 23 00 00 00
فوریه 11 20:49:43 so-notebook kernel: sd 3:0:0:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
فوریه 11 20:49:43 so-notebook kernel:  sdc:
فوریه 11 20:49:43 so-notebook kernel: sd 3:0:0:0: [sdc] Attached SCSI removable disk
فوریه 11 20:49:44 so-notebook kernel: FAT-fs (sdc): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
فوریه 11 20:49:44 so-notebook udisksd[1890]: Mounted /dev/sdc at /media/so/09155253009 on behalf of uid 1000
فوریه 11 20:49:44 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:49:44 so-notebook kernel: FAT-fs (sdc): Filesystem has been set read-only
فوریه 11 20:49:44 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:49:54 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:49:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:50:05 so-notebook udisksd[1890]: Unmounted /dev/sdc on behalf of uid 1000
فوریه 11 20:50:36 so-notebook kernel: sd 3:0:0:0: [sdc] 15679488 512-byte logical blocks: (8.03 GB/7.48 GiB)
فوریه 11 20:50:36 so-notebook kernel: sd 3:0:0:0: [sdc] Write Protect is off
فوریه 11 20:50:36 so-notebook kernel: sd 3:0:0:0: [sdc] Mode Sense: 23 00 00 00
فوریه 11 20:50:36 so-notebook kernel: sd 3:0:0:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
فوریه 11 20:50:36 so-notebook kernel:  sdc:
فوریه 11 20:50:36 so-notebook kernel: sd 3:0:0:0: [sdc] Attached SCSI removable disk
فوریه 11 20:50:36 so-notebook kernel: FAT-fs (sdc): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
فوریه 11 20:50:36 so-notebook udisksd[1890]: Mounted /dev/sdc at /media/so/09155253009 on behalf of uid 1000
فوریه 11 20:50:36 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:50:36 so-notebook kernel: FAT-fs (sdc): Filesystem has been set read-only
فوریه 11 20:50:36 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:50:40 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:50:43 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:50:54 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:50:54 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:51:03 so-notebook udisksd[1890]: Unmounted /dev/sdc on behalf of uid 1000
فوریه 11 20:51:04 so-notebook udisksd[1890]: Ignoring SCSI command SYNCHRONIZE CACHE failure (Non-GOOD SCSI status from SGIO v3 ioctl: status=2 host_status=0 driver_status=8) on /dev/sdc
فوریه 11 20:51:04 so-notebook udisksd[1890]: Successfully sent SCSI command START STOP UNIT to /dev/sdc
فوریه 11 20:51:04 so-notebook udisksd[1890]: Powered off /dev/sdc - successfully wrote to sysfs path /sys/devices/pci0000:00/0000:00:14.0/usb1/1-2/remove
فوریه 11 20:51:13 so-notebook kernel: sd 3:0:0:0: [sdc] 15679488 512-byte logical blocks: (8.03 GB/7.48 GiB)
فوریه 11 20:51:13 so-notebook kernel: sd 3:0:0:0: [sdc] Write Protect is off
فوریه 11 20:51:13 so-notebook kernel: sd 3:0:0:0: [sdc] Mode Sense: 23 00 00 00
فوریه 11 20:51:13 so-notebook kernel: sd 3:0:0:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
فوریه 11 20:51:13 so-notebook kernel:  sdc:
فوریه 11 20:51:13 so-notebook kernel: sd 3:0:0:0: [sdc] Attached SCSI removable disk
فوریه 11 20:51:14 so-notebook kernel: FAT-fs (sdc): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
فوریه 11 20:51:14 so-notebook udisksd[1890]: Mounted /dev/sdc at /media/so/09155253009 on behalf of uid 1000
فوریه 11 20:51:14 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:51:14 so-notebook kernel: FAT-fs (sdc): Filesystem has been set read-only
فوریه 11 20:51:14 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:51:17 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:52:01 so-notebook udisksd[1890]: Unmounted /dev/sdc on behalf of uid 1000
فوریه 11 20:52:08 so-notebook kernel: sd 3:0:0:0: [sdc] 15679488 512-byte logical blocks: (8.03 GB/7.48 GiB)
فوریه 11 20:52:08 so-notebook kernel: sd 3:0:0:0: [sdc] Write Protect is off
فوریه 11 20:52:08 so-notebook kernel: sd 3:0:0:0: [sdc] Mode Sense: 23 00 00 00
فوریه 11 20:52:08 so-notebook kernel: sd 3:0:0:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
فوریه 11 20:52:08 so-notebook kernel:  sdc:
فوریه 11 20:52:08 so-notebook kernel: sd 3:0:0:0: [sdc] Attached SCSI removable disk
فوریه 11 20:52:08 so-notebook kernel: FAT-fs (sdc): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
فوریه 11 20:52:08 so-notebook udisksd[1890]: Mounted /dev/sdc at /media/so/09155253009 on behalf of uid 1000
فوریه 11 20:52:09 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 11 20:52:09 so-notebook kernel: FAT-fs (sdc): Filesystem has been set read-only
فوریه 11 20:52:09 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:29:24 so-notebook kernel: sd 3:0:0:0: [sdc] 15679488 512-byte logical blocks: (8.03 GB/7.48 GiB)
فوریه 20 13:29:24 so-notebook kernel: sd 3:0:0:0: [sdc] Write Protect is off
فوریه 20 13:29:24 so-notebook kernel: sd 3:0:0:0: [sdc] Mode Sense: 23 00 00 00
فوریه 20 13:29:24 so-notebook kernel: sd 3:0:0:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
فوریه 20 13:29:24 so-notebook kernel:  sdc:
فوریه 20 13:29:24 so-notebook kernel: sd 3:0:0:0: [sdc] Attached SCSI removable disk
فوریه 20 13:29:25 so-notebook kernel: FAT-fs (sdc): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
فوریه 20 13:29:25 so-notebook udisksd[1971]: Mounted /dev/sdc at /media/so/09155253009 on behalf of uid 1000
فوریه 20 13:29:25 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:29:25 so-notebook kernel: FAT-fs (sdc): Filesystem has been set read-only
فوریه 20 13:29:25 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:30:11 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:30:11 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start eecfac8d)
فوریه 20 13:30:11 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start b2937051)
فوریه 20 13:30:11 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 8e6f4c2d)
فوریه 20 13:30:11 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 523310f0)
فوریه 20 13:30:11 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 2e0febcc)
فوریه 20 13:30:11 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start f1d2af90)
فوریه 20 13:30:11 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start cdae8b6c)
فوریه 20 13:30:11 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 91724f30)
فوریه 20 13:30:11 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 6d4e2b0c)
فوریه 20 13:30:29 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:30:29 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start eecfac8d)
فوریه 20 13:30:29 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:30:29 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start eecfac8d)
فوریه 20 13:30:38 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:30:43 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:32:06 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:32:06 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start eecfac8d)
فوریه 20 13:32:06 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start b2937051)
فوریه 20 13:32:06 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 8e6f4c2d)
فوریه 20 13:32:06 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 523310f0)
فوریه 20 13:32:06 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 2e0febcc)
فوریه 20 13:32:06 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start f1d2af90)
فوریه 20 13:32:06 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start cdae8b6c)
فوریه 20 13:32:06 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 91724f30)
فوریه 20 13:32:06 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 6d4e2b0c)
فوریه 20 13:34:21 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:34:21 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start eecfac8d)
فوریه 20 13:34:21 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start b2937051)
فوریه 20 13:34:21 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 8e6f4c2d)
فوریه 20 13:34:21 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 523310f0)
فوریه 20 13:34:21 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 2e0febcc)
فوریه 20 13:34:21 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start f1d2af90)
فوریه 20 13:34:21 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start cdae8b6c)
فوریه 20 13:34:21 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 91724f30)
فوریه 20 13:34:21 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 6d4e2b0c)
فوریه 20 13:38:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 13f3d0b1)
فوریه 20 13:38:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start eecfac8d)
فوریه 20 13:38:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start b2937051)
فوریه 20 13:38:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 8e6f4c2d)
فوریه 20 13:38:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 523310f0)
فوریه 20 13:38:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 2e0febcc)
فوریه 20 13:38:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start f1d2af90)
فوریه 20 13:38:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start cdae8b6c)
فوریه 20 13:38:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 91724f30)
فوریه 20 13:38:56 so-notebook kernel: FAT-fs (sdc): error, fat_get_cluster: invalid start cluster (i_pos 0, start 6d4e2b0c)

I also get this error ((udisks-error-quark, 0)) for repairing the USB flash by disk manger app of Ubuntu :

New update:

I found solution by using gparted app by this instruction:

This has been reported as a bug. But you can try this work around and see if it works. Install Gparted if you don't have it installed. If its not, just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command(s) below:

sudo apt-get install gparted

Once installed, open the application, and before formatting, make sure that you choose the right drive, and Unmount the disk by right clicking on the partition, and choose Unmount, then you can use the format To option, to format it to whatever type of file system you wish. Once done click on the green check mark to apply the changes.

like this:

unfortunately i don't saved the result log file which could help to understand what happened . ( but based of sudo journalctl | grep sdc it seems that not unmounted correctly by removing form PC USB port manually and ...

Thanks.