[Q] Edit vold.stab AllWinner A20 Tablet (I-Inn Pro 9.0) - Android Q&A, Help & Troubleshooting

Hi, I've bought this tablet few day ago, and I need to change extsd to sdcard via vold.stab editing. I've rooted the tablet, supersu work, but I can't mount R/W the file system! I've tried many way: root explorer, es file manager, mount /system r/w app, terminal, but I can't! Via Terminal I receive the "Read Only file system" reply.
TABLET SPECS:
Android 4.2.2
Model Number: PRO 9.0 Dual Core U BLACK
CPU: AllWinner A20
RAM: 512MB
Anyone have an answer?

So, anyone can help me? This tablet get me very annoied for this problem!

Have you solved it?

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