• Title: JIAKE JK740
  • Listed: 03/29/2015 2:23 pm
  • ROM Version: ROM Android 4.4.2
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Before you start please install correctly the drivers, use PDANet USB drivers and install correctly MT65xx Preloader driver!

After unzip, please check !!!README FIRST!!! folder.

Please use !!!ONLY SP_Flash_Tool_v3.1344.0.212!!! for downloading, otherwise you will get PMT chanaged error and you are not able to download!

This is custom/original firmware for JIAKE JK740 MT6592 phone.
ro.build informations:




Wed Jul 16 12:21:56 CST 2014 

ROM properties:
boot.img -> insecure boot image (patched boot image, for for root ADB at fastboot, if you need, not necessary to use)
factory_NONmodified_boot.img -> factory default boot image
EBR1 -> increased internal storage to 4GB (usrdata)
factory_NONmodified_EBR1 ->Factory default internal storage (1GB)
EBR2 -> decrased internal SD to 2GB (fat)
factory_NONmodified_EBR2 -> Factory default internal storage (5GB)
recovery.img ->CWM recovery v5.5.0.4 (autogenerated, DO NOT use for firmware upgrade, ro.product not matching!)
factory_NONmodified_recovery.img -> factory default <3e> recovery
system.img -> ROOTED factory image, integrated SuperSU 2.46 and busy box 1.22.1 nothing else
factory_NONmodified_system.img -> factory default (unrooted) system image

Section 1. 
For a new phone (if you don't need to save usrdata) 
- select the files that i marked in SP Flash screenshot (recovery, EBR1, EBR2, android)
- download, when it's finished 
- start the phone in recovery mode (Vol UP + Power)
- in recover mode do -wipe data, -wipe cache, -wipe davlik cache (be patient it's take time, do not turn off, or remove battery)
- resart (be patient first boot after factory reset take time, do not turn off, or remove battery)

Section 2.
For a used phone (if you have to save usrdata)
- backup internal SD data to external SD card (advise: use min. 8GB card, you can save anything else that you can do) or to PC
- select only recovery.img in SP Flash
- download, when it's finished 
- start the phone in recovery mode (Vol UP + Power)
- backup, remove external SD card and veryfy saved data if its correct
- follow instructions in Section 1
- start the phone in recovery mode (Vol UP + Power)
- do the restore in CWM

Always use Download mode in SP FlasTool! (otherwise you can kill you device)
Never select preloader! (otherwise you can kill you device)
Say Yes on the Download warning in SP Flashtool "NOT All images are correctly loaded…" (do not afraid this is normal)

※Please make a backup of your device before installing or updating ROM

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