[Upgrading, Modifying and Unlocking] romulocarlos:
Hello.

So, as I described here, I success got root on this device. Now, I want a full backup in case things going bad. And obvious, a way to restore this backup.

I was searching for days for a ROM, but it simply don't exist (yet). This model have an identification (alps l1 mp6 v2 gxq6580 weg l p69) wich is used in some other devices (includings Samsung clones), so, I checked all the ROMs I found looking into /system partition on my device and comparing with /system image of the ROMs (I used SuperR's Kitchen), and none of them are equal, I mean, a lot of files (includind build.prop) are different, so there is a great chance to brick my phone if I use it.

Even if it is found, I can't restore with SP Flash Tools, because it don't work with this phone. I tried to readback, but it recognizes but never start. As the phone is a MT6580 based SoC, maybe is compatability issue also. MTK Droid Tools don't work also. It recognizes, but can't do anything (don't generate scatter, don't root, don't nothing), again maybe a compatibility also.

The stock recovery have no option to backup, and I'm afraid to flash a CWM or TWRP, because I don't know much about porting these things, and I don't have much information about partitions and these things yet. ADB while in recovery give me an unauthorized device, by the way.

The phone accept fastboot commands, but don't accept the 'fastboot boot image.img", to try a temporary recovery, it only accept the 'fastboot flash image.img'. As sayed on the thread above, the bootloader is now unlocked, by the way.

So... this the situation... Can't have backup for now. If it help you to help me, there is the result of ls -all /dev/block/platform/mtk-msdc.0/by-name/ command in adb shell:

1|root@gxq6580_weg_l:/ # ls -all /dev/block/platform/mtk-msdc.0/by-name/
lrwxrwxrwx root root 2017-03-30 00:16 boot -> /dev/block/mmcblk0p7
lrwxrwxrwx root root 2017-03-30 00:16 cache -> /dev/block/mmcblk0p19
lrwxrwxrwx root root 2017-03-30 00:16 expdb -> /dev/block/mmcblk0p11
lrwxrwxrwx root root 2017-03-30 00:16 flashinfo -> /dev/block/mmcblk0p21
lrwxrwxrwx root root 2017-03-30 00:16 frp -> /dev/block/mmcblk0p12
lrwxrwxrwx root root 2017-03-30 00:16 keystore -> /dev/block/mmcblk0p17
lrwxrwxrwx root root 2017-03-30 00:16 lk -> /dev/block/mmcblk0p6
lrwxrwxrwx root root 2017-03-30 00:16 logo -> /dev/block/mmcblk0p10
lrwxrwxrwx root root 2017-03-30 00:16 metadata -> /dev/block/mmcblk0p14
lrwxrwxrwx root root 2017-03-30 00:16 nvdata -> /dev/block/mmcblk0p13
lrwxrwxrwx root root 2017-03-30 00:16 nvram -> /dev/block/mmcblk0p2
lrwxrwxrwx root root 2017-03-30 00:16 oemkeystore -> /dev/block/mmcblk0p15
lrwxrwxrwx root root 2017-03-30 00:16 para -> /dev/block/mmcblk0p9
lrwxrwxrwx root root 2017-03-30 00:16 proinfo -> /dev/block/mmcblk0p1
lrwxrwxrwx root root 2017-03-30 00:16 protect1 -> /dev/block/mmcblk0p3
lrwxrwxrwx root root 2017-03-30 00:16 protect2 -> /dev/block/mmcblk0p4
lrwxrwxrwx root root 2017-03-30 00:16 recovery -> /dev/block/mmcblk0p8
lrwxrwxrwx root root 2017-03-30 00:16 seccfg -> /dev/block/mmcblk0p5
lrwxrwxrwx root root 2017-03-30 00:16 secro -> /dev/block/mmcblk0p16
lrwxrwxrwx root root 2017-03-30 00:16 system -> /dev/block/mmcblk0p18
lrwxrwxrwx root root 2017-03-30 00:16 userdata -> /dev/block/mmcblk0p20
root@gxq6580_weg_l:/ #

I sucessfully (I think) dump a boot image with dd command (dd if=/dev/block/mmcblk0p7 of=/sdcard/boot.img), but I'm not sure it is 100% perfect and if it can be safely used to restore (and how to restore... maybe 'fastboot flash'?). Maybe I can dump some other images, but I don't tried yet.

If you need any other information, I reply in almost same time.

Thanks in advice.