First of all, prepare latest IOS files from Cisco
https://software.cisco.com/download/home/283915795/type/280805680/release/15.2.7E9?catid=268438038
File Name: c2960c405-universalk9-mz.152-7.E9
Next, Back up the configs. Just in case!😀
Download tftp64 https://pjo2.github.io/tftpd64/
We need to transfer the above file to the C2960 flash memory.
Enter command: copy tftp flash
enter command: reload
enter command: boot c2960c405-universalk9-mz.152-7.E9.bin
enter command: reload
enter command: show version