[Miscellaneous Android Development] poulette73:
Back to 1.05.14 with root

Here's how I make a rollback to 1.05.14 version on my HP Slate 7 2800 tablet (sorry for english, I'm french).

Firstly a big thank to all those who advised me in PMs... !!

Note : I will neither be held liable in case of mishandling or brick. So be careful or do not start these operations if you don't feel able to accomplish them.

First of all, you need to get RK 2.1 tool from finless (thanks to Bob !) : http://freaktab.com/forum/developme...p-your-rk-device-rom-with-the-new-rk-2-1-tool

Download link : http://www.freak-tab.de/finless/rk_tool21_how_to.zip

I assume you have already installed the ADB drivers. If it's not the case, you can continue with this topic from MrTheV : http://xdaforums.com/showthread.php?t=2660208

Or install Morobo here : http://www.moborobo.com/ or else Google it.

Yo may need Cydia Impactor 0.9.14 (by Saurik) later, download it here : http://www.cydiaimpactor.com/ to root, or easily restart in bootloader mode.

1st step :

you must generate the file parameter.txt

Restart in bootloader mode (with Cydia Impactor, or with a command line using Adb.exe like adb reboot booloader).

Use the program ROM_Dumper_Tool.exe (on the third tab Advanced Function) and read and follow the file INSTRUCTIONS_README_FIRST.TXT

Suppose that at this stage you have exported the file, rename it, and have it changed and saved as specified in the documentation.

2nd step :

download other archives

[ROM] Stock for HP Slate 7 2800 (by rjwil1086) : http://xdaforums.com/showthread.php?t=2608181

Download link : http://goo.gl/f5bL3p

[CWM] 6.0.3.3 for HP Slate 7 (by rjwil1086) : http://xdaforums.com/show....php?t=2599500

Download link : http://goo.gl/GDbDyc

Then, you have to use the tool in Flasher_tool\ROM_Flash_Tool_137.exe

With parameter.txt, we will flash ONLY boot.img contained in the archive pine-update-signed.zip and recovery.img contained in the second archive CWM 6.0.3.3.zip (read the instructions carefully).

Now we have a functional CWM recovery.

3rd step :

Back to 1.05.06

Now reboot in CWM recovery and flash the pine-update-signed.zip file already got.

Then you have to put the stock recovery.

Download it here : http://goo.gl/cGtlt1

We'll return into bootloader mode, and flash ONLY this stock recovery ( 20131217.recovery.img ) located in the zip with the tool Flasher Tool\ ROM_Flash_Tool_137.exe.

We now have an HP Slate 7 in 1.05.06 version with a 1.05.10 recovery.

You can now reboot into recovery mode and flash the update.zip of 1.05.10 in order to be consistent.

Download link here (and rename it to update.zip) : http://www.4shared.com/zip/YE4jxMtoba/update_10510_.html

4th step :

Back to 1.05.14

Reboot in recovery mode and flash the update.zip 1.05.14

Download link here (and rename it to update.zip) : http://www.4shared.com/zip/ZBxJS9Pdce/update_10514_.html

You can now easily root your tablet with shuame, Cydia Impactor, or a lot of others methods available on XDA. Then install SuperSU (from Chainfire).

5th step :

Back to CWM Recovery

You can use my method here : http://xdaforums.com/showthread.php?t=2570936

Additions :

- How to make RockChip's BatchTool work under Windows 8.1 (by VirusPlus) : http://vondroid.com/threads/how-to-...ol-work-under-windows-8-1.16827/#.ViH5kH7hCM8

- Rockchip batch Tool v1..7.rar download link : http://www.4shared.com/rar/v-3XgLn6ba/Rockchip_Batch_Tool_v17.html

- Rockchip driver USB fix.rar download link : http://www.4shared.com/rar/FCARP97cce/Rockchip_driver_USB_fix.html

- To avoid future update from HP, simply install the FOTAKill.apk (by Rocket321) : http://xdaforums.com/showthread.php?t=1832496

Good luck !!!