Fantastic! Just tested flashing SlimKat91L-kernel-mixed.zip and this fixed the FTP upload issue.
Thanks again, adeii!
Update - Found out that this kernel broke FM Radio, so I flashed the one you mentioned here:
And it works but, I cannot control the volume of the FM radio.
It looks like I am already running display-legacy as I downloaded this rom - SlimKat-u8951-4.4.4.build.9.1-UbetTC49-Legacy.zip. Is this the right display-legacy rom? If not, which one should I try? Do I have to flash a kernel as well? If so, is it this one - SlimKat91L-kernel-mixed.zip?
For uploading, I am using FTP Server (Free) from F-Droid to try and upload something to my computer, but SlimKat always restarts.
Thanks for any help and for all the custom roms still supporting our Huawei Ascend!