How To Reprogram Android device in safe way

Hello, Why you need to reprogram/flash your smartphone?

In this era, we are in digital technology! many people in the world use a mobile phone, for me, mobile handy devices has become a fast break gadget! why? it because of 1st cause is incessantly used (overused).
The 2nd cause is this by installing apps that cause memory full and the result operating system (OS) error.

Mobile phone users trying to work it out with the help of the internet and sometimes because of the lack of experience is resulting cause damaged their work

I give some advice to all before you Flash/Reprogram your mobile phone.

1. Make Sure You have a Backup ROM of your Device

Hey! even it is not in good condition in software. (for future purposes - if you need some file to restore.)

Then how to full Backup the ROM?
This knowledge was I said that user needs experience how to repair the mobile phone.

Anyway, I give the basic idea, The Chipset tool software what you using have an ability to backup dump ROM?
Yes, it can backup you need to read and understand the all support option and help option of the tool.

The second is there is a PAID tools which can buy to GSM gadget seller store can backup Firmware. Like me im a technician on a mobile phone I have it paid tool.

Here the sample of a picture of two tools below has a Backup option.

Fig 1: A paid/free tool ex. full backup ROM button.

Sample Video how to backup using a Paid tool dongle

The picture above that have big Read Full Flash is a screenshot of Paid tool that has the ability to backup ROM

and the other one tool with Readback is a sample of the Free tool have the ability to backup dump ROM.

Sometimes after backup dump ROM, it will need to convert to become flashing ROM ~_~you can contact me how to, learn backup ROM using a free tool like SP flash tool

2. Be sure you know the version, device project , of your device 

The sample is read out the logs of original info of MTK phone software version

Device Brand   : alps
Device Model   : gxq6580_weg_l
Device CPU     : MT6580
Device IntName : full_gxq6580_weg_l
Device Version : Android 5.1
Device Compile : 6/2/2017 3:24:22 AM
Device Project : ALPS.L1.MP6.V2_GXQ6580.WEG.L_P69
Device ExtInfo : gxq6580_weg_l

Many similar models have different version release, Mostly on MTK and Spreadtrum chipset, That is why if you full flash the full ROM with different loader or Device project to the phone, This is resulting a screen problem like black screen or scramble display even if is the same model because of different loader of LCD driver called it UBOOT or LK file.

3. Don't Format + Download device

Unless you have full backup all or know what you do because after doing this its result dead-phone because the partition of CPU memory was changed even boot the driver to PC may be affected or we may be called it Dead BOOT, sometimes only PAID TOOLS can restore it ^^
The result after flash the phone calibration was erased even IMEI, NVRAM. you need to restore this file to activate the network (signal).

4. Must better make flash the phone in Safeway procedure in the first flash.

OK if you don't know the original Device version project of your phone, You can flash/program it as lucky a 90% efficiency???
YES! try to flash select the ROM file name system or Android file only and un-check the other file, it will flash the system file only without erasing other parts of Firmware of the device
.
Why I said this, as my experience! if you have a device on hand with having a problem in software related, The Android file or system image file is mostly only damage that causes the problem
Many tools even paid tools or free tools of mobile phone software have advanced setup or manually how to load a ROM file of its kind

See the sample here how to use SP Flash Tool for MTK as how to flash as MOTA SIU LIKE as far as my experience. read more tut at link next

http://phoenixemer.blogspot.com/2016/08/sp-flash-tool-mediatek-chips-flasher.html

For Spredtrum/SPD chipset how to flash a system file only: Read the Tuts at
http://phoenixemer.blogspot.com/2016/08/upgradedownload-spreadtrum-chipset.html

5. Backup the NVRAM file 

Sometimes NVRAM file needs to flashback to the device after writing firmware.
You can need this file if the phone has a problem of  INVALID IMEI the result of it cant detect the SIM or it goes to the network was emergency only and no signal.

Unknown baseband is the result in about menu setting in baseband detail most of the android phone also
No SIM apps even if have SIM inserted
NVRAM files are used to repair INVALID SIM after damaged the security files when @user Full flashed the ROM to a mobile phone, NVRAM firmware is a need to activate the serial number of the mobile phone.
This files were back up in different format use file wisely and write the original IMEI when flashing
Warning changing another IMEI of a device is illegal, use the original number of IMEI you can found on the back cover of the mobile phone.
Visit and download the NVRAM Collection backup HERE 

Sample Video how to backup and restore MTK-NVRAM FREE!

6. UBOOT file "uboot.img  LK.bin" 

The Uboot file is a file driver of a screen display. In my experience even if the ROM firmware is similar to the phone, after writing firmware is result in a black/scramble display screen. The cause of this is a different boot version. this is called device project version release example of this is V1, V2, V3 etc. How to fix it? the advice no.1 above again, If you have a back-up you can replace the "uboot.img or lk.bin" of your downloaded ROM from Backup ROM.

Fig 2 :

You can fix Screen Problem by replacing the 3 files on in fig 2 example above.
Delete the boot,lk,logo file of your downloaded ROM and place the boot,lk,logo of your backup rom then reflash again and the result is your problem solved.

7. HARD RESET First 

Another Safeway before flash ROM to a device, There is 2 kind to HARD RESET!

A. Try to Hard reset First using key combination before you Flashed Rom to a device.
Mobile Phone has built-in software to repair itself, Try to boot to recovery,
Example > In the power off phone press Hold Volume up or down +Power on.
After you boot to recovery, Select Wipe data and Cache then reboot> you must wait approximately 3-10 minutes in my experience to show menu screen but it's not tried to flash ROM as Safeway above.

B. Try to hard reset using Firmware ROM, Download an exactly a Firmware ROM of your device with user data at cache file. Make uncheck all file in flasher tool except USERDATA and CACHE.
The tool will flash only the two have checked. Read more how to flash Hard reset using Firmware example HERE.

NOTE! Some Android problem if the device success to Hard reset
Android device 5.0 and up have FRP startup, You must log-in your previous account to continue but if you forgot Read HERE may help what is FRP.

I add more advice soon, meanwhile, this 6 advice may help readers how to start to avoid problem after flash
Thanks for reading this short advice I hope it may help you before you start!
Br- emerlits gsm service