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How to unbrick my Prestigio PMP7100D3G tablet

Android Q&A - xda-developers - forum.xda-developers.com
Dear All,

I have been trying to find a solution for almost 2 days now but to no avail. All information I found (perhaps I lookup with wrong keywords) is about unbricking the phone or other manufacturers tablets but once someone rooted the device and installed a modified rom but then playing with fastboot or some download managers, etc.

To cut long story short:

1. I wanted to revert back to 4.1 JB soft for my tablet as I found the most recent update messing up with 3G connectivity despite the fact the manufacturer prepared the update to improve 3G... anyway

2. I run the RKBatchTool 1.5 the device was connected properly as I did before when upgrading from ICS to 4.1 JB

3. Unfortunately, just before the end of downgrading something went wrong (please see the below log) and now booting up the device fails. At first it displayed some linux script about trying to recover, then prestigio screen appeared just to show in a second a dead android robot with an exclamation mark.

14:57:28 504 Rockchip Batch Tool v1.5.3.0 start run

15:02:16 091 Rockchip Batch Tool v1.5.3.0 start run

15:05:33 769 Rockchip Batch Tool v1.5.3.0 start run

15:58:23 292 **********Upgrade Start Total<1>**********

15:58:23 307 <Layer 5-3> Test Device Start

15:58:23 307 <Layer 5-3> Test Device Success

15:58:23 307 <Layer 5-3> Check Chip Start

15:58:23 323 <Layer 5-3> Check Chip Success

15:58:23 323 <Layer 5-3> Get FlashInfo Start

15:58:23 323 <LAYER 5-3> INFO:FlashInfo: 0 0 0 1 0 10 10 28 1E 2 5

15:58:23 323 <Layer 5-3> Get FlashInfo Success

15:58:23 338 <Layer 5-3> Prepare IDB Start

15:58:23 354 <LAYER 5-3> INFO:CS(1) (8192MB) (HYNIX)

15:58:23 354 <LAYER 5-3> INFO:CS(3) (8192MB) (HYNIX)

15:58:23 370 <Layer 5-3> Prepare IDB Success

15:58:23 370 <Layer 5-3> Download IDB Start

15:58:23 978 <Layer 5-3> Download IDB Success

15:58:23 978 <Layer 5-3> Reset Device Start

15:58:24 953 <Layer 5-3> Reset Device Success

15:58:24 958 <Layer 5-3> Wait For Loader Start

15:58:26 406 <Layer 5-3> Wait For Loader Success

15:58:26 410 <Layer 5-3> Test Device Start

15:58:28 465 <Layer 5-3> Test Device Success

15:58:28 465 <Layer 5-3> Download Firmware Start

15:58:54 548 <LAYER 5-3> ERROR:RKA_File_Download-->RKU_WriteLBA failed,Written(9437184),RetCode(-3)

15:58:54 548 <LAYER 5-3> ERRORownloadImage-->RKA_File_Download failed(boot)

15:58:54 548 <Layer 5-3> Download Firmware Fail

15:58:54 548 **********Upgrade Done Success<0> Fail<1> Time<31263>ms**********

16:27:13 387 Rockchip Batch Tool v1.5.3.0 start run

4. I tried a combination of volume up and power button but still no luck.

How can I bring the live back to the device that was not rooted. I have an external SD card. I loaded an original image from prestigio but I guess I need something else done so it actually boots from the SD and recovers the ROM to the internal memory.

I would be really obliged for your help.
Date: Apr 8, 2013   



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