Not Really Sure how much help i can give you seeing as i never seen anyone brick one of theses devices. Im pretty sure you don't a Elocity A7+, from i beleive they aren't available on the market. You should have a regular Elocity A7.
Before you check the link below be very positive you can't get into recovery, sometime it take a little long for it to come up.
Also if the tablet is new you should also think about calling or emailing Elocity to see if it can be replaced.
most of use aren't very active in the Elocity A7 forum of xda, so you may get more help at Tabletroms Forum
I don't no much about Nvflash but you should read into this it may help: http://forum.xda-developers.com/show....php?t=1022273
Phone: HTC JEWEL•0003 • Rom: CyanogenMod 10.1
Tablet: ASUS Grouper (Nexus 7) • Rom: Paranoid Android
Phone: HTC SUPERSONIC•0004 • Rom: Paranoid Android
Tablet: Elocity A7 Tablet • Rom: Dexter_nib CyanogenMod 7 RC1
Phone: HTC Diamond Touch• Rom: EnergyROM
Project Phone: HTC STALLION