the risk is very slow, just insert your dc adapter keep power enough.

flash spl is just use 1 second,that's risky

and the newer version,will mandate flash spl because will change the flash oob driver portal

they didn't write anything about it , i gues use burn tool to flash spl and use normal tool to flash zimage, userdate and system image

Why and how to flash SPL?
Why can't go back?

update method:

1 first, it's a test version.
2 don't try the password in setting button. if you do,and you don't know what you are doing,please delete the ''burn.ini" if it exist.
3 copy ZT_Bx.spl ZT_Bx.boot zImage system.pack.img userdata.pack.img to burntool.exe directory. do not copy burntool to last old version directory(there has burn.ini).
4 connect to usb and press menu button,make usb update connect.
5 when device10 show green,just press start directly

just keep power is enough when you update spl/boot
you don't need update spl again in new version if you update once

why can't rollback to last version:
1 we change the oob layout in nand because we add mmc/sd update system and compatible with CE
2 we change some nand bad block marked rule because of some constomer's strange problem
3 this is compatible with newer version and last ce/android double systems version

thank you pay attention to zt-180
update is your decision

update method:

1 first, it's a test version.
2 don't try the password in setting button. if you do,and you don't know what you are doing,please delete the ''burn.ini" if it exist.
3 copy ZT_Bx.spl ZT_Bx.boot zImage system.pack.img userdata.pack.img to burntool.exe directory
4 connect to usb and press menu button,make usb update connect.
5 when device10 show green,just press start directly

just keep power is enough when you update spl/boot
you don't need update spl again in new version if you update once

why can't rollback to last version:
1 we change the oob layout in nand because we add mmc/sd update system and compatible with CE
2 we change some nand bad block marked rule because of some constomer's strange problem
3 this is compatible with newer version and last ce/android double systems version

thank you pay attention to zt-180
update is your decision

I don't understand, you say not to enter the password, but how are you supposed to tell the burntool where to get the files from, when I openned the burntool with the password, everything was blank for Android, only WinCE settings were set and they weren't even checked, in the old burntool, it had the previous settings for Android. So is this 2.1 or 2.2? Why change the update method without making sure you could flash a previous version? It is great to have improvements, but not if it changes what previously worked correctly. Does the mic work with this ROM? Or is this test only for adb and gps? ...