atom exec stay at o2 logo

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Hi to all,
please help me,
When i wana install the last atom exec rom,two days ago,everythings is ok,but after hard reset,my device stayed at O2 logo and I couldn't hard reset my device and install rom too,because didn't sync with my laptop,have you any idea for this problem?

take off the battery and try again

I take off the battry many time,but this problem exist yet.

can you enter in bootloader mode (camera + reset) ?

yes,but i see a black screen that written on it:sd detected and
"starting download ...
sdDownload:couldn't find file;diskimg.nb0;.
sdDownload:couldn't find file;eboot.nb0,.
sdDownload:couldn't find file;dm.nb0,.
..."
at the end of screen:
"SD trensfer completed."
what your idea?what things i must to do?

Once entered in bootloader mode (ignore these SDCard messages), plug de USB cable and wait the device to be detected by windows

you'll be able to upgrade a new rom

i have the same problems, i upgrade the phone still stay on o2 logo

any other solution??

thanks

have you follow the upgrade procedure correctly?

just an opinion...

remove sd card...
then enter bootloader
then run upgrade DSUU.... follow on screen instruction

should be ok to upgrade your rom...

1. remove SD Card
2. remove battery
3. hold camera button and reset (stylus) button
4. replace battery while still holding the buttons
This will bring you back to bootloader mode. Just flash the above DSUU.

DUN USE MEMORY CARD TO FLASH AGAIN!!!