[Q] Nexus 4 softbricked, can't charge topic

my nexus 4 was on temasek's unofficial cm12 build ver 6.1
recovery in use was recovery-philz_touch_6.59.0-mako
i decided to update the rom to build 6.5, so i downloaded the zip to my sdcard,
i had not made a nandroid bkp
after flashing the rom/gapps/superuser, wiping dalvik and cache, things went wrong

after that the phone would only show 'google', then freeze, then go blank, then again show 'google'. this is the first Loop i have encountered where the boot animation never even showed up.

after that in about 8 hrs, i tried all of the foll-
installing the stock images: my phone booted up the first few times i flashed stock images using fastboot, but after three times (because each time it successfully booted i would go back to recovery to try flashing the customromzip) my phone stopped booting up for stock.
it resolutely stayed stuck on the boot ani.

recovery: flashed many times, via sdcard and also via fastboot. no problem with the recovery

zips. absolute fail. nothing can get me past the 'google'

now there's another peculiarity, which makes me wonder if there is hardware damage involved in this softbrick story

after all this flashing my charge came down to 20%, so i tried to charge it (switched off, obviously, since it isn't booting up)
but every time i connect my charger, it boots up,and then shows me google, and freeze and restart..same old cycle
in a last ditch attempt to somehow charge my phone i have brought it to fastboot, and left it connected to my laptop. i don't know if this will work.

please help, also i am now considering using a toolkit, unified android or wugfresh (the latter, i have a previous bad experience with) to get my phone to atleast switch on with something.
should i use the toolkit or just take my brick to the servicecenter to check for damage to hardware