It doesn't work that way.
TWRP depends heavily on the fstab of the device model in question, which describes the partition layout of the storage. This is not related to the SoC (processor), and almost never the same between different models.
The ROM you provided does not contain a valid scatter file or recovery.img so you can not use SP Flash Tool.
I recommend you to make a backup of boot, copy the boot.emmc.win to PC, then to another phone and patch it with Magisk Manager apk
After successful patching, copy the patched file back to PC
Reboot the phone to bootloader, and flash the ...
When you boot directly into TWRP after flashing TWRP patches the stock system recovery-from-boot.p file by renaming (modifying) it:
This prevents the system from replacing twrp with stock recovery.
Simplifying the process there are a couple of files involved. First, the install-...
I can't see the question here ?
Are you asking what the driver is for ?
Please have a look at this video to understand what the preloader is, MTK Backup & Restore
The Mediatek Preloader is used for flashing new image's to your device.
Their is two different boot loaders on Mediatek device's..
MTK DA USB - For flashing the Preloader
/proc/dumchar_info is provided by the dumchar driver, which reads the partitioning info from a header file generated during the build process and compiled in when the kernel is built. This header file is also used by other components, like the preloader, possibly bootloader, and both regular and recovery kernels. This means unless you can rebuild said ...
Its a file used in flashing roms (or parts of the rom) for example for the SP Flash Tools. This file has info in it that tells the tool how to flash to the device.
You don't flash the DA file so it wouldn't be checked by the boot ROM. But what you are flashing would be checked.
Check out SP Flash Tool
After a backup, I tried to delete the nvram folder (via adb root ; adb shell ; su - ; mv /data/nvram somethingelse). I do confirm that this folder is created from scratch when you reboot the device.
So the answer is yes, it is safe to delete the folder.