Problem Loading Stock ROM (CM.Bin)

Hi Guys,
So I’m really hoping someone can help me. I am currently trying to flash a stock firmware to my S6 Edge (SM-925F) to fix a problem I caused (loss of IMEI) when changing my custom ROM. Every time I try to load the Rom I get an error at the CM.bin file. Log is below,

<ID:0/013> Added!!
<OSM> Enter CS for MD5..
<OSM> Binary Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/013> Odin engine v(ID:3.1100)..
<ID:0/013> File analysis..
<ID:0/013> SetupConnection..
<ID:0/013> Initialzation..
<ID:0/013> Get PIT for mapping..
<ID:0/013> Firmware update start..
<ID:0/013> SingleDownload.
<ID:0/013> boot.img
<ID:0/013> NAND Write Start!!
<ID:0/013> cache.img
<ID:0/013> cm.bin
<ID:0/013> FAIL!
<ID:0/013>
<ID:0/013> Complete(Write) operation failed.
<OSM> All threads completed. (succeed 0 / failed 1)

I have extracted all of the files from the stock ROM and have tried to load the CM on its own but I get the same error. For some reason it will just not allow me to flash this section of the ROM.

I have tried a lot of stuff and done a tonne of reading and I’m a bit stumped. I’m hoping this is an issue that some of the more experienced people on here might have encountered. If anyone could offer any advice of what I should try next that would great and hugely appreciated.