I flashed 4 7210 last week and all dead due to not enough voltage to the griffin box, I fixed it a few days ago.
I can successfully flash the phone, but when the software try to extract CP file, it failed, than the phone can't be turn on, I just wonder is there anyway to power on the phone and reflash it?

Here are the flashed fail log
Phone data:
V 4.18/07-12-02/NHL-4/(c) NMP.
IMEI 350...........
Product Code 0508944
UPP Version 4384
Initializing Phone...
Erasing
Flashing MCU
Erasing
Flashing Content data
Extracting content package . . .
Extract content FAILED
Erasing
Flashing PPMFlashing FAILED
Make sure phone is connected and powered!
ErrCodes: [13:FFFFA300]

hello,
you can power on manualy when trying to extract

Please check your DC power supply 9v, 1A
and choice correct file. eg:

C:\Program Files\Nokia\Phoenix\products\nhl-4\nhl4__04.740

C:\Program Files\Nokia\Phoenix\products\nhl-4\nhl4__04.74v

C:\Program Files\Nokia\Phoenix\products\nhl-4\nhl4__04.74.ucp_vv

power on manually just after you click flash.
should be fine.

@jacsha,

What version of the Griffin Software are you using?

Odia.

i plug the adaptor direct into the wall instaed of into the extended power bar, it solve the problem, but the thing is i'm now sitting in front of 4 dead 7210, it can't charge, power on, of flash, everything time i power on the phone, the screen just flash once and nothing happen, it just won't turn on. Is there anyway to make it "?flashable"
I'm using 1.99

Just use a 9v adapter for the griffin box,

Then flash the phone, when griffin says its extracting content data press the power button...

Also, is there a blue light lit on the box? if so you may have a flash cable problem

use griffin 199_.. down on this forum or use griffin1985

did u use the right cp file....may be it is write protected?

i plug the adaptor direct into the wall instaed of into the extended power bar, it solve the problem, but the thing is i'm now sitting in front of 4 dead 7210, it can't charge, power on, of flash, everything time i power on the phone, the screen just flash once and nothing happen, it just won't turn on. Is there anyway to make it "?flashable"
I'm using 1.99

To check, try to flash your 7210 without content file i.e. skip content file flashing. If flashing is succesfull, your phone will now be alive. You can also press power on during extracting content file as suggested by others. if still failing, then just use mobMB to upload the galleries..etc.....

check you version of griffin

tick "skip bluetooth flashing". This might help you.

try to change 32.768khz

check your cable