Here is an Android 4.2.2 Jelly Bean rooted firmware for the PIPO M8HD tablet based on latest update from Pipo version 1.0.4 dated 2013/10/28 supporting OTA (Over the Air). This firmware is valid for the M8HD in both 3G and WiFI models.

( M8HD_#316_1009_1.0.4_NoMMS_20131028.img / M8HD_OTA_software_3G&WIFI version_20131028 )

Build information:

Kernel: Linux version 3.0.36+ (root@alex-System-Product-Name) (gcc version 4.6.x-google 20120106 (prerelease) (GCC) ) #316 SMP PREEMPT Mon Oct 28 11:29:32 CST 2013

Android 4.2.2 JB: rk30sdk/rk30sdk/rk30sdk:4.2.2/JDQ39/eng.root.20131028.185917:eng/opinions-on-teclast-p90hdst-keys

ro.rksdk.version=RK31_ANDROID4.2.2-SDK-v1.04.00

Notes: 

- Certificate Center and original PiPO launchers have been kept in the firmware

- Certificate Center will ask for product key, which is not needed, just hit later and connect to Internet and it will be activated

- any update received thru OTA may interfere with our custom firmware, we recommend not to apply any OTA update

Custom firmware features:

• root with latest SuperSU version 1.65 (free version)
• removed most Chinese and unnecessary applications
• Google Play Store fixes so more application are visible/compatible
• updated busybox v1.21.0.git (2012-11-29)
• Unix like init.d boot scripts support, more details on init.d scripts here
• changed permissions on external sdcard to allow write access
• increased space for applications (/data partition) to 4 GB
• kernel modules (cifs, tun, lan, serial, xpad) compiled by Oma & Crew RKTablets, thank guys!
• NEW! : optional ClockworkMod (CWM) Recovery easy install package
• all launchers have been kept: stock Android, Kid Launcher and PiPO launcher

Download: kasty-pipo-m8_hd-422-ota_104_20131028-rooted4.zip

Flash with Rockchip Batch Tool version 1.7, use Restore button.

Please report any problem with this firmware, I can't verify this custom firmware works as I don't have a PIPO M8HD tablet to test the custom firmware.