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Weird problems with my tablet

Hello! I have some poblems with my chinese tablet Lenco Cooltab 70. Three days ago the tablet discharger. When I charged it and powered it on all files were deleted! So I tried to install my old apps like Opera mobile, Youtube, etc..During the installation I got this error message " AppName could not be installed. Free up some space and try again". My tablet has got empty internal storage!!! ( storage bug?). I tried searching in Google. Every possible option failed! Next error message was during the installation new Custom ROM( Paranoid android)- acording to the instructions. I got this message:
E: signature verification failed
E: installation aborted.
Next thing I did was: update recovery mode to CWM( too TWRP). i receive the installation aborted error again. People on XDA or another forum advise to install goomanager or Lucky Patcher, but how?! I cant install anything! When I try to enter the download mode( install CWM or FLASH ROM via Odin) hold power button+ volume down it goes to Recovery mode with RED TRIANGLE!
Please help me I cant do anything...
Pics are included.
What I already tried:
- wipe data/ factory reset
- wipe cache
- install Custom ROM Paranoid
-install CWM or TWRP
-root again( SuperOneClick said: device allready rooted!)
- all options on Google

iam are the same problem !!!

[Q] Save My Xperia Neo V

i have an Sony Xperia Neo V , Officially Updated ICS 4.0.4
so i m starting to move with it....
i have rooted my device and its successfully rooted, then i tried to unlock bootloader, followed sony's official method.
at final command line "fastboot.exe -i 0x0fce oem unlock 0xKEY" i got an error, it says Failed "your device already unlocked"
ok fine, so its unlocked...
i needed a CWM recovery, so i install and flash CWM via X-Parts from Play store and it works successfully...
i rebooted my devices into recovery and took an nandroid backup.
well everything goes well
then i got interest about cynagenmod officail custom Rom, i have downloaded cm-9.1.0-haida.zip and gapps-jb-20121011-signed.zip for my xperia neo v. i choose that because it was only stable ROM from cynagenmod.
then cynagenMod instruction says that i have to flash from cm-9.1.0-haida.zip, so i did copy boot.img from zip and paste it into sdk and i flashed that via SDK.
the great mistake i have done
its flashed CWM Based recovery v6.1.0.2
My boot screen also changed from Sony, Xperia to Free Experia Project with that boot.img flash
after that i didnt took any nandroid backup, i thought i already have one via X-parts CWM
so i did follow instruction, wipe cache, wipe data/factory reset, delvic cache, battery and install cm-9.1.0-haida.zip from sd card, also gapps-jb-20121011-signed.zip
after installation done i rebooted my device and CM9.1.0 just ready to use, well i have setup everything and start using Cynagenmod Based ROM,
i didnt get much fun of it and i wanna go back to my stock ROM ics 4.0.4
i reboot into recovery and restore backup (created with x parts recovery), the restoration was successfull but after reboot Free Xperia Project boot window comes again and after few second my phone stucks in black screen.
that time i noticed my phone have now two CWM recovery, CWM v6.0.1.2 and X-parts Recovery.
then i tried another ROM called "Revolution_ics_hd_revolution[build_7].zip" it was also installed successfully, but my phone stuck again after Free Xperia Project Boot Screen, and X parts Recovery gone again with this installation.
i tried to flash Stock Rom MT11i_4.1.B.0.587.ftf and Stock kernel MT11i_4.1.B.0.587_kernel.ftf by Flashtool.
when i reboot into flashmod then altime it says : -
06/041/2014 14:41:30 - ERROR - Error in processHeader : 1 : Incorrect function.
06/041/2014 14:41:30 - ERROR - Error flashing. Aborted
i dont know what to do, i can only install and use CM9.1.0 haida now, no other ROMs, even i dont wanna go back to my stock boot screen, stock rom 4.0.4...
i guess somehow if i can remove that boot.img comes from cm-9.1.0-haida.zip, flash original sony boot screen then i could have back to my everything stock and original
is there any way? any tips...?
I wanna go back to my custom kernel, custom rom 4.0.4.....
Please help me....

You must insert loader.sin on firmware folder (flashtool)
Sent from my MT11i using XDA Free mobile app

Please someone help me, I'm desperate

I was with my xoom with stock rom 4.0.4 ( MZ605 / Brazil ) , with the unlocked bootloader and root , so I installed TWRP Recovery 2.7.1.0 touch , already had it installed , but installed this by up to update I gave the right wipes and tried to install 4.4.4 TeamEOS - The Revival || Nightlies ( full_everest_ta-eng-zach.zip ), but the following error appears
skipping MD5 check: no MD5 file found
symlink: some symlinks failed
E: error executing updater binary in zip '/emmc/full_everest-ota-eng.zach.zip'
Error flashing zip '/emmc'/full_everest-ota-eng.zach.zip'
failed
I tried to mount the internal USB to try to install another rom , but the TWRP is not riding the xoom on my notebook , and all xoom drivers are installed , I tried installing the original room for fastboot , but it does not recognize and can not that you start the process
Please somebody help me , my xoom is unusable and I'm desperate about it

I put another rom on my sd card, I gave the wipes and tried to install, but now it appears
Device is NOT bigpart partitioned...
I think I lost my device even

kingdomjunior said:
I put another rom on my sd card, I gave the wipes and tried to install, but now it appears
Device is NOT bigpart partitioned...
I think I lost my device even
Click to expand...
Click to collapse
Maybe you need to follow this :
http://forum.xda-developers.com/showthread.php?t=2506997
in order to make your device run bigparted Rom.

Can't install custom Rom on my Xperia Moro st23i

I really want to install custom Rom on my st23i but when I do its always failed. (With BL unlocked, rooted and stock firmware 11.0.A.5.5)
At first I tried to install cm11, on installing cm11 it says installation complete. But when I tried to install cm11 gapps, it says installing package failed. (I wiped data and cache) I rebooted my phone and it bricked( stucked on Sony logo) but I recovered it. ( I directly downloaded the rom and gapps to my device)
At second time, I tried to install lollipop Rom 5.1 ( I saw it on google) ( I wiped cache,data and delvik) but when I install it says " Installation aborted" ( no status 6/7 just installation aborted only)
( Directly downloaded the rom to my device)
And at the third time :/ , I tried to install HFS MATERIAL ROM EDITION FINALE but again it says " E: can't open /sdcard/download/HFS-MATERIAL-Rom-Edition-Finale-Miro.zip
(bad)
Installation aborted. ( Directly downloaded all the requirements to my device) ( I wiped cache,data and delvik)
ALL MY THREE TRIALS, I FOLLOWED CORRECTLY ALL THE STEPS AND PROCEDURE.
Can anyone tell me what's wrong? I'm thinking that the problem is on my phone.
And I got also a problem when I'm making a nandroid backup it's just backing up my system but when in backing up data its failed and the backing up stops.
Hope Anyone can help me.
Thanks in advanced.

Softbricked - TWRP errors / flashtool fails [Vernee MIX 2 4gb ]

Hello,
I accidentally deleted the OS on my device when I installed TWRP.
[TWRP 3.1.1 by Jemmini]
The problem is that in TWRP I can't install or do anything in it.
I got error messages to almost everything, (I can't install, copy, even cant install from sdcard) like [1] [7] [8].
Everything is copied to phonne is corrupted or the installation cannot be completed beccouse of an error message.
Being a newbie, i wanted to flash the Stock roms without any success.
Downloaded two roms and I cant use flashtool.
Does anyone has any ideas about my phone?