Hi, I have a phoenix casiatab 10b tablet, her stock firmware works really bad. I need one different or more updated, if were possible with android 4.4 or 4.2.
Specs

Rockchip Dual Core Cortex A9 1.5 GHz.
RAM: 1GB DDR3.
Storage: 16GB / Micro SD card slot (up to 32GB).
Display: LCD capacitive 10.1 "| 16:9 | 1024 x 600 multitouch.
Connection: Wi-Fi 802.11 b / g, Bluetooth and supports external USB 3G.
Video Output: Micro USB, HDMI Super video (1080p)
Audio output: 3.5 mm headphones.
Additional Features: Front and rear 2MP Camera | 2 Speakers
Stereo | microphone
PC Interface: USB 2.0 Hi-speed (high speed).
Platform: Android 4.1.1.
Power: Rechargeable Lithium Battery to 5.000mAh.

Full specs http://www.phoenixtechnologies.es/datos/descargas/Phcasiatab10b/ficha/Phcasiatab10b_ing.pdf

Firmware 4.1.1 here http://www.phoenixtechnologies.es/datos/descargas/PHCASIATAB10B/Android%204.1/ANDROID.zip

You know one tablet with similar specs for try her firmware? I need help because my stock firmware is really bad.