Can an official ROM be installed w/o USB connection?

I need to revert back to the last good Jelly Bean ROM to test if my USB port will come back to life, and failing that, if charging will work while the tablet is on. Currently, charging only works if I power down. This situation came about as a result of the _025_ KK OTA update Lenovo pushed to me.
Since I don't have USB communication is there a way to get the machine to install a ROM from SD card or local storage?
I recently rooted the device so I could get access to dmesg and logs. I don't see any evidence of the OS indicating USB sensing when I plug or unplug a USB cable connected to the charger power supply.
Are there other tests\logging I can look at to determine the state of the USB?
rickbol

Yes, the device will not operate without an AT&T service plan. You will not be able to use the iPod, iCal, etc. features without a plan. Even if you never intend to use the voice or EDGE data features.
From my direct experience, the device may or may not work with USB 1.1 ports. Of the 7 computers I've dealt with via a customer or in-person only 2 even recognized the iPhone and neither allowed a sync/activation.

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Moderator comment: Please do not use large font sizes.Might be interpreted as shouting.
Solved!
Go to Solution.

Hi wensh
Glad I could help.
i did what u said and i installed kitkat rom
I just ''presented'' the official firmware options
can i write imei without root
You can try this(can't guarantee 100% that it will work but it's worth a try)->
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*If you get ''this command is not allowed in userbuild'' or similar message->
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Same goes for the second IMEI AT +EGMR=1,10,"xxxxxxxxxxxxxxx"(x=your 15-digit SECOND IMEI)
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*#06# to check IMEI
If you want to use the app's other ''settings'' you do require root access.
You can use THIS APP to root your device,(download to your phone->allow unknown sources in Settings->Security->install).
The above IMEI restore method is generally risk free.
As you probably already discovered(you can do a search on ''restore'',''replace'' or ''rewrite IMEI on MTK'') there are other methods to repair your IMEI.
Some methods do involve risks.Use at own risk.
Also please keep in mind that in many countries changing/replacing the IMEI number/s is illegal.
Hope this helps.
Regards.
PS.You can also use the QR codes I made to download the apps
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