You transferred the kit in "ASCII" or text mode.   You need to use BINARY mode.   Delete that kit file, then type BIN before starting the transfer again.  Also, yes, you need to delete those two core files.  This will free up the space you need. 
Hi Team, I have two PS-100E arrays. I have successfully updated one array from 3.3.1 to 4.0.7 using ftp and serial cable. However I am unable to update the second array. I can copy the .tgz up ok: This is an ls: ftp> ls200 PORT command successful.150 Opening ASCII mode data connection for 'file list'.usrMgmtExec.coreMgmtExec.1.coreVolExec.1.corekit_V4.0.7-R94173_4244411.tgzsumo0310.bin226 Transfer complete. However when I connect in via serial to run the udpate this is the error I get 12:40:39 Updating from kit file "kit_V4.0.7-R94173_4244411.tgz"12:40:39 Unpacking kit file and verifying integrity.tar: couldn't write to file eqlstor.gz : No space left on device12:40:43 Update kit has a checksum error. Update aborted. Copy a new kit to the array.awk: cmd. line:2: (FILENAME=- FNR=76) warning: error writing standard output (No space left on device)UKESMINTD01> 216:0:logevent:12-Jun-2013 12:40:43.190001:logevent.c:242:ERROR:30.4.1:Array firmware update from version V3.3.1 to  failed. Reason: Update kit has a checksum error.  Update aborted.  Copy a new kit to the array.. I have removed the .tgz with ftp and rebooted array. I have downlowded and copied up a new file several times, as well as rebooting the array to no effect. I am not sure how or what to delete to create more space This is the ls from the array that updated successfully. It has different contents from the problomatic one above. 150 Opening ASCII mode data connection for 'file list'.usrnetmgtd.coreMgmtExec.1.core226 Transfer complete. It's probably something obvious, how can I create more space? Thanks
Error updating Firmware on PS-100E Array