for mtk you need also backup NVRAM and "protect _xxx" partition
(B) How to backup security area / partitions. Read by vendor ?
Answer:-
Run ''EasyJTAG Plus'' set voltage manually which voltage sweet-able for your eMMC detected also set the frequency 1 mhz + Bus 1 bit.
Go to Read soft partitions then Check ''eMMC / UFS'' if you get all partitions is okay only your phone dose not run or EDL mode detected by 'PC" device manager.
No problem ! don't be upset !
Go to Read by vendor operation ''TAB" there are already all partitions are visible.
(C) Pay attention, You have need to be create Below the partitions backup very carefully.
*) config
*) fsg
*) sec
*) modem
*) modemst1
*) modemst2
*) oppodycnvbk
*) opporeserve2
*) oppostanvbk
*) Persist
