Root and install Custom Rom without USB PC Connection? - Acer Iconia A700 and A510

Hi,
I've got an Acer A510 with JB 4.1.2 Stock Rom.
Before the Update to JB I could connect my Acer to my PC and the PC recognized the tablet without any problem but since the Update nothing happens when I connect it to a PC, even no "DungDung" Sound on the PC. Tried on Win7 32 & 64 Bit, 3 diffrent PC's an 3 different cables! No way to get it work.
So I wanted to root the tablet and install a custom rom. Is this possible without connecting the tablet to a PC?
Here the detail of the tablet:
Jetzt drauf:
Stock Rom 4.1.2 nicht gerootet
Image Version: ACER_AV051_A510_RV11RC02_EMEA_CUS1
Build-Number: ACER_AV051_A510_1.035.00 _EMEA_CUS1
Abbild-P/N: FM.S1LA0.04J
I really hope someone can help me.
Kind regards
avalanche99
Sent from my A510 using xda app-developers app

Same problem here.
My rom is the NoThrills last frankenA700.
Greets from Germany

AW: Root and install Custom Rom without USB PC Connection?
Hi,
I had same problem with my a510.
After update to JB no USB Connection or debugging, was possible.
You can follow NoThrills CWM Recovery, but can't use any of the adb commands.
Use all the fastboot-commands to unlock boot-loader and install cwm.
After that you can root your Tablet.
Lost USB connection seems to me like a 'feature' inside the Acer ROM.
Going back to ICS evreything is working, but not in JB.
acer iconia a510
cwm 6.0.1.9
JB acer stock ROM

Okay,
i found the problem.
Since the update to JellyBean the setting in memory/USB Connection (PC)/MTP Setting is desablet.
I set the dot to this setting and my USB connection is already running

does anybody know how to root without a usb? My usb doesn't work no matter what I try. even fastboot, adb, debug nothing works.

A700 no USB
johnsk said:
Okay,
i found the problem.
Since the update to JellyBean the setting in memory/USB Connection (PC)/MTP Setting is desablet.
I set the dot to this setting and my USB connection is already running
Click to expand...
Click to collapse
johnsk i have a same problems, please tell me how make this settings. I have an stock rom Acer.AV051.A700.RV16RC01.EMEA_DE.
Thank you in advance!
Later Edit.
I found this settings but not solved my problems! PC don`t recognize my new A700 tab.
USB port works well all external HDD or flash pen via OTG, but PC can`t recognize, no TA-DA sound. Maybe output port is broken!
Any solutions?

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