Can I flash firmware after flashing ROM?
Yes, before you flash the ROM. Main reason, is that the firmware will install stock kernel (therefore over-writing any kernel that is present); so you will want to flash the firmware first, then the custom ROM.
Does installing new ROM erase data?
it will not wipe the mobile data unless its different from what your current rom is. i.e if you try to install the rom without format/wipe-ing factory data and user data. it might display that installation failed due to incompatible data(it means the new android rom and apps that comes with it is not supporting them).
What should I wipe before installing a new ROM?
If you are switching ROMs (changing from one ROM to a completely different one) then you should perform a factory reset. A factory reset wipes data and cache (which includes dalvik cache). A factory reset will also wipe sd-ext and android_secure if your device has those items.
What should I wipe before flashing custom ROM?
Don’t you have a backup? Well okay if you’re installing a new custom ROM then you just have to clean the dalvik,cache, system and data and after that you can go ahead and flash the custom ROM.
Why do you need to flash a new ROM?
I recommend you to flash new rom because you can recover your lost data mostly. Before flashing take backup of your device so if anything goes wrong you can restore your device. Fast. Simple.
Can You flash custom ROM on Samsung phones?
It is believed this flash tool is leaked before released by Samsung officially although they developed and internally used. It supports users to flash the Custom firmware on their Samsung devices. Which means the devices can be run or operated by 3rd-party systems, besides the original ROM. There are no limitations, unlike the Stock ROM.
What should I do if my phone won’t flash a ROM?
Reboot your phone and enter recovery mode. This is a bit different on every phone, but usually involves some permutation of pressing the power and volume buttons at the same time. Head to the “Backup” or “Nandroid” section of your recovery mode. The default settings should be fine.
Do you have to back up apps after flashing a ROM?
If you just unlocked your bootloader and wiped your phone, you can skip this step, but any time you flash a ROM in the future, you’ll want to back up your apps first, since you may have to wipe your phone before you flash. With a backup, you can easily restore those apps and data after flashing, making the process a lot simpler.