I am in the same situation as you. But I am in the latest firmware (.205) and so I used Towelroot for obtaining root and now I am going to use flashtool to backup my ta (I think that option it's integrated in the flash tool?). Then unlock bl and flash the cm nightly for huashan. But the question I have is, what baseband should I have for the cm nighties? Also, are they compatible with the C5303 model?
Hope we can both find our answers!
Sent from my C5303 using XDA Free mobile app
Edit: So far I backed up my TA partition, unlocked bootloader (which did a factory reset, so be aware when you do it! i backed up everything and so should you), now I'm updating and installing some apps to make sure I can create a CWM Backup that is pretty decent, soon I will flash the Kernel from the Cyanogenmod nightlies. So far I did pretty much like you are saying here, except that I rooted with much less hassle by using Towelroot. Btw if you want to install Cyanogenmod, dont install the Nightly from 16/07, that one is bugged and causing systemui FC, the bug is already detected and fixed for the next nightly, install the previous one and then install the one from 17/07
Edit: I am installing busybox now so I can make an Online Nandroid backup, this way I will have the stock rom fully backed up, including the correct kernel, so I can later revert back to a fully functional rom just from CWM Recovery. Then I will flash the CM kernel, boot it and flash the CM rom! Progress is going smootly so far
Edit: So far so good, installed the CM kernel, it doesn't show up the Online Nandroid backup I did tho, and I even moved it to the place it should be... I have to figure that out after, I backed up that nandroid to my pc too just in case, and I am creating a nandroid backup inside CWM, even tho it doesn't have the stock kernel in this backup, just in case there is a problem with the backup I did with Online Nandroid, at least I have the full system backed up and just need to pick a .ftf and install the .1.205 kernel only..
I am almost done with this nandroid will install the rom just after!
Edit: Process went very smooth, already booted on CM, everything is fine, I just forgot to install Gapps but it's okay I install later.
Edit: CM 11 is so much more smoother than Stock 4.3... You wont even believe how faster it is. The only drawback I got was the sound quality from the rear speaker, is not as good, still is decent (still better than my Xperia U, LOL)
Edit: Not sure about this tho but I think the Wifi is much more stable, I sometimes got randomly disconnected from my Wifi and so far it didnt disconnected on CM11!
Dude, just go on with it, root the phone, backup Trim Area (TA), unlock and flash CM11! You will like! Also, I saw FXP is working on Firefox OS for our device, seems like we will get another thing to play arround