total commander will not rename files?
 

total commander will not remane files // even after soft reset any help?

for example i user TC to go to the windows folder i want to change tapres.192.dll to tapres.192.dll.bak so i can replace the file. i have tried to rename what i mentioned // i have tried to chencge it to tapres.192.dll.old and i have tried to completely rename the file all together .. when i hit enter after typing the new name in it just goes back to the original name ... soft reset was completed. just flashed rom as well

Thank you