Update Mar-12/2016: as long as on the market appeared a long line of new types of mtk6260 mtk6261 mtk2502C mtk2502A (etc) watches equipped with strange new PCB or flash_ID parameters, the new release <Readback Extractor mtk 2.0> now has the capacity to identify, to read, check, rebuild firmware and collect and insert in the .cfg files the flash_ID's coded inside the ROM dump for almost all types of mtk watchphones or smartwatches based on RTOS Nucleus
NOTE: being tested already for mtk6260 mtk6261 mtk2502C and mtk2502A
In short - if you intend to install in your smartwatch new firmwares, mods etc, before to initiate any flashing with the Flash Tool app (pushing that goddamn < Download > button) think twice, 'bove all better DO a backup for the original firmware, why so? because it's containing all original drivers hence you'll be able to recover 100% your watch in case of bricking.
How to:
First you have need of a full dump of your ROM. Assuming that you already got a
Flash Tool 5.15.16 and drivers, and you were at the point of flashing something (already chose the download agent and scatter file)
preparations:
a. Set options/backup and restore on no action
b. load the download agent (you find this file inside the flash tool folder)
c. load a scatter firmware - for initialization flash tool needs a scatter file (.cfg) - for dz09 you
get this one - for any other than mtk6260A get
here and get a firmware compatible with your PCB
d. in case you have W10 - go to the start menu and click on power and hold down the shift key while clicking on restart. A screen then comes up and you need to choose troubleshooting and then startup options. It will then reboot and give you a menu. press 7 which is ignore signed drivers and then when windows comes up, you will be able to install the drivers.
for instance let's say you have a DZ09 smartwatch:
1 - press < Readback > in upper menu and so < Add > in the middle menu
2 - click twice on the item appears in the main window, set name as ROM_DZ choose in browser the path and save
3 - set as Physical start address 0x00000000 and as Length 0x01000000 or 0x00800000 or 00400000 (try them in this order) then ok
4 - turn off the watch, press < Readback > in the middle menu wait 2 seconds and connect through USB your watch
5 - wait until the upload is complete (big green ring)
Now second stage:
1 - download the app I've built attached here (Readback Extractor mtk) and unzip it
2 - create a folder where you intend to keep in safe the original firmware and name it for instance DZ09-Orig
3 - do a copy of Readback Extractor mtk 2.0.exe and place it inside the DZ09-Orig folder then click twice on it
4 - press <Load Readback file> and browse after the ROM_DZ file created before with the Flash Tool then open
5 - Wait about a minute while the app will check bit by bit the integrity of your file
6 - If everything went ok and your file is healthy then app will show " health 100% " so you can proceed to the next step
7 - Press <Rebuild Firmware> and wait about one minute (it shows a progress counter)
8 - When appears the message " - ALL DONE!!!" close app and go back in the DZ09-Orig folder, now you'll find there a set of new files which are the original firmware kit ready to be flashed back in your phone anytime you want
9 - Enjoy flashing anything you like without any fear that something bad can happen
Some tricks for writing IMEI in your watch NVRAM:
you connect to usb your watch (turned on this time) and set the com port on the watch screen, go in device manager and check the port number your watch is connected, then you open Tera Term hyperterminal (google for this app), connect it as serial com on watch com port and then give the command:
AT + EGMR = 1, 7, " imei number "
if on screen appears OK then ready, you've changed your imei
AFTERWARDS READ ME story - Anywhere you search, there is no one to tell you explicitly how to extract from your mtk smartwatch the firmware kit
All says a halfmouth: Do a full < Readback > in Flash Tool, you'll do it being confident that from now on you say goodbye to any risk because you have A BACKUP hence you start flashing new firmwares. And the Big Brick is coming , you smile and get back to your < Readback > backup discovering that, sadly, you have a binary bulk at first sight good for nothing. It cannot be so useless, isn't it? after all it contains full dump of your ROM! I was in exactly the same situation, so 'cause I didn't find any answer I've started reverse engineering . . . and it worked, first I did it manually for guys being in the same situation, 've noticed that is a common issue so I had to choose how to help, simpler but dangerous (for you) way, to create a tutorial <how to> or the hard way (hard for me), to develop an app which will do all "cooking" automatically and I choose the second because in manually way there is a quite big "chance" to mess up with your primary bootloader which could get to a real tragedy - no modem - brickest brick you saw in your entire life
Readback extractor mtk 2.1 beta
Flash Tool and drivers
4pda.to
drive.google.com
