Disk Utility cannot erase USB drive (error -69877: couldn't open device)

Disk Utility (macOS Catalina 10.15.2) fails to erase my USB drive (64GB key, currently formatted in exFAT). ~~~ /dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *64.1 GB disk2 1: EFI EFI 209.7 MB disk2s1 2: Microsoft Basic Data Lexar 63.9 GB disk2s2 ~~~ I've tried a bunch of commands that I've found here and there in the terminal, but none of them worked, like: ~~~ ➜ ~ diskutil eraseVolume exFAT MyName /dev/disk2 Started erase on disk2 Unmounting disk Error: -69888: Couldn't unmount disk ~~~ ~~~ ➜ ~ diskutil eraseVolume exFAT MyName /dev/disk2s2 Started erase on disk2s2 Lexar Unmounting disk Erasing Error: -69760: Unable to write to the last block of the device ~~~ ~~~ ➜ ~ diskutil eraseDisk FAT32 MYSD MBRFormat /dev/disk2 Started erase on disk2 Unmounting disk Creating the partition map Error: -69877: Couldn't open device ~~~ ~~~ ➜ ~ diskutil eraseDisk free EMPTY /dev/disk2 Started erase on disk2 Unmounting disk Creating the partition map Error: -69877: Couldn't open device ~~~ My USB drive appears as read only when i do CMD+I, I tried repairing the permissions but that failed too. ~~~ ➜ ~ diskutil resetUserPermissions /dev/disk2 id -u Ready to reset user permissions on disk2 Error encountered attempting to reset permissions for user 501 home directory on disk2: Permissions are not enabled on the disk (-69861) ~~~ Thx in advance for the help :)