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ClockworkMod (CWM) Recovery easy install for RK3066 and RK3188 -- TWRP/CWM Flash-Tool and root for RK3288

 Please donate to support OMA and CrewRKTablets firmware work, thank you !

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Criteria for finding a ROM........
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roses2at
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2014/08/24 - 20:00
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Oma7144 said
Simply flash the ODYS Fusion firmware incl. eraseIDB (to wipe the current layout). You can later flash the CWM with the included RKAndroidTool and do a backup again.

Hurrah!! Success..........well, sort of.

I installed and booted up to the Android home screen, but not using Fusion stock FW, instead with the Genio stock dump and using recovery_CWM.img.

So the good news is, I know the tablet is still capable of running a JB operating system. The bad news is that this 4.2.2 for Genio is no good to me - because of the different WiFi chip, there is no internet access or BT. (And clearly I cannot send it back to the supplier like that either...........) 

I was able to reboot into CWM and do a backup of that OS to save me having to reflash it again. So the 2nd good news is that I could also restore it with no loops or hangs or green droid during reboot. However, it saved the backup on my SD card in a strange way: one folder of only 32MB with the image files, but another folder called 'blobs' of 657MB. What the heck is that all about??

[EDIT: OK, I sussed it. From CWM version 6 onwards it makes incremental backups. It stores placeholder image files in the folder named with the date and time, and the rest of the data in the blobs folder which is one level higher in the folder called backup. Every time you do a back up it just updates ONLY those files that have changed since the last time, which is supposed to make things quicker. For me, that does not meet my needs: I'd rather have full separate backups of 1.2GB or whatever, so even though I have many discrete but large files, I can decide which one of those I want to restore. If your backups are always and only to your int sd or ext sd, incrementals sort of make sense, but I always copy my backups to my PC and Google Drive for safekeeping.]

The bad news is that I have 3 (possibly 4 if I can solve the MD5 mismatch problem) good and working (at least they were in the past) Nandroid CWM backups that STILL WON'T RESTORE (I just now tried them again). Is it perhaps because my SD card is corrupted? (But then there would be an MD5 mismatch, or?)

I want my Fusion JB 4.1.1 back!!!

Does anyone know a way I can send my CWM backup files either via ADB or via Bootloader (class for rockusb devices driver)?

 

By the way, what is the best way to format an ext sd card for use in a tablet:

- from File Explorer in JB (how and which parameters?)

- from CWM (how and which parameters?)

- or from Windows using FAT32 and default allocation size?

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roses2at
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2014/08/25 - 09:43
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Oma7144 said
....all what I have seen indicates that the tab has a defective NAND. 

I think you may be right, because this new install of GEnio stock FW 4.2.2 is showing some interesting behaviour.

ESFileExplorer>>> /sdcard gives the message "SD card  empty, unmounted or not present. /mnt/sdcard says empty folder.

So it appears that the internal memory is damaged.

I'd like to ask again your reasons for how you know this from such a distance.

Unfortunately, I don't know the terminal commands to solve this. I can see how to mount and format /sdcard from CWM but I am unsure if those commands "stick" after the tab boots into Android.

But why would that prevent a successful install of Fusion stock FW and yet Genio stock FW does flash correctly?

I know the Fusion FW worked before and I have a Nandroid backup to prove it (but that doesn't restore either).

Please assure me that all your CrewRK fixes such as format_NAND and int_SD_to_NAND have not caused this to happen. If you think it is possible, then no worries, I do not hold you responsible - I just want to know and to make others aware.

Thx

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Oma7144

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2014/08/25 - 10:05
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Typical for these kind of chinese stuff. Tab won't have passed our QS. Return quote is 20 - 40% of the whole population.

Symptome itself is you can write an image and it is ok. Next time you cannot write (or restore) the same image without errors. Even when you write an image successfully it could be that it will not boot next time or in a few days ... 

I guess you got here an already refurbished tab (Fusion has its window mid of last year). You got my recommendation.

- Oma -

The following users say thank you to Oma7144 for this useful post:

roses2at
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roses2at
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2014/08/25 - 10:33
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Oma7144 said
I guess you got here an already refurbished tab 

That's what makes me think those 60 EUR/hour people will NOT just throw my tab away when I send it back. I'm sure they will examine it closely and refurbish it again and recycle it and sell it. I don't believe a big organisation like that (well any firm really) can afford to discard stuff, however bad the quality is. I just don't know how strict they are if they get back from customers rooted devices and/or devices that have a flash counter of about 30!!!

You gave me advice what to do - but what is your recommendation for another tab of about similar price as I outlined in Post#52 of this thread? Stay away from Odys/Axdia? What make and model for other options which have better QC standards?

Symptome itself is you can write an image and it is ok. Next time you cannot write (or restore) the same image without errors. Even when you write an image successfully it could be that it will not boot next time or in a few days 

So you're saying that my Nandroids might restore OK on another Fusion or another RK30 tab - that it's the defective NAND to blame and not the CWM backups?


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roses2at
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2014/08/25 - 11:13
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After doing a CWM-based Recovery and pressing reboot system now, I sometimes get a message "ROM may flash stock recovery on boot. Fix?".

What does this actually mean and what are the consequences of pressing No or Yes?

 

Either way, in my case with this particular backup, one option takes me to the 2nd splash screen Jelly Bean 4.1 but hangs before going into the 'Android' boot animation; the other option takes me into a CWM-boot loop. 

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roses2at
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2014/08/25 - 12:14
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ESFileExplorer>>> /sdcard gives the message "SD card  empty, unmounted or not present. /mnt/sdcard says empty folder.

So it appears that the internal memory is damaged.

Or maybe not...........

I rooted this Genio and rebooted and went back into ESFile Explorer - then got a notification message saying the SD card was damaged (I thought it meant the micro SD ext sd but with nothing important on it) so I allowed it to format it.

And guess what? Piff-Paff-Poof, /mnt/sdcard and /sdcard is back with 4 folders in it (Android, Digital Editions, eBooks and Lost.Dir).

I wish I understood what is going on here.....

 

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roses2at
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2014/08/25 - 14:32
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roses2at said

Oma7144 said
Simply flash the ODYS Fusion firmware incl. eraseIDB (to wipe the current layout). You can later flash the CWM with the included RKAndroidTool and do a backup again.

I know you don't have a Fusion, but do you have another RK30 device you can test this FW with?

I've been trying since early morning till now with a fresh download of the zip file, and using as many different recovery.img files as I have and in various combinations (eg as you mentioned above, first with the included recovery - which I think is 4.1 - and immediately followed by Run again but ticking only parameter, misc & recovery and using other images such as CWM 6.1.0.5; but also bypassing that first step and having all lines ticked, EraseIDB then Run but with other images loaded. Is that clear?)

 

The images I have tried are:

from Fusion stock FW: 12,560 kB

from Genio stock FW: 16,384 kB

from CM10: 5,167 kB

from I don't know which D/L: 1,843 kB

but I don't know which specfiic versions of CWM they all are or how to find that out.

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