I want to upgrade 620 os 6.1 to 6.3 but not enough memory ,so i want to delete some files
which files can i delete ,and which is unuse
(Aruba620) #show storage
Filesystem Size Used Available Use% Mounted on
/dev/mtdblock11 156.0M 122.6M 33.4M 79% /flash
none 300.0M 1.9M 298.1M 1% /tmp
/dev/mtdblock9 50.0M 24.6M 25.4M 49% /mnt/img0
/dev/mtdblock10 50.0M 34.0M 16.0M 68% /mnt/img1
(Aruba620) #dir
-rw-r--r-- 1 root root 27433 Aug 27 07:26 default.cfg
-rw-r--r-- 1 root root 1794 May 8 09:02 demo_license
drwxr-xr-x 3 root root 0 Apr 3 04:44 fieldCerts
-rw-r--r-- 1 root root 140216 Aug 27 06:44 flashbackup.tar.gz
-rw-r--r-- 1 root root 20872 Apr 9 07:15 original.cfg
drwx------ 2 root root 0 Mar 13 10:12 tpm