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[Q] Cruz Tablet T301/JZ4760 Full Brick?

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Valentinez
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(Last edited by Valentinez; 19th January 2014 at 09:47 PM.) Reason: Solved
#1  
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Join Date: Aug 2012
Tablet [Q] Cruz Tablet T301/JZ4760 Full Brick?

Ok, so I had issues with the stock ROM, and tried to flash Steven J Hill v0.3 ROM, and it got to a point where it just turned black [backlight LED still on...] left it for a while, never came back on, so I hit the reset button on it, and now I can't get into recovery, it just boots and says Cruz, it flashes and Dims, still saying Cruz, then it just flashes Cruz on the screen. The only way my computer can see this device if I boot it into the JZ4760 USB Boot Mode, [Reset + Vol- ] but I can't seem to use any tools I've found [oh the google seaching...] to at least flash the recovery to get it working. I have the USB Boot Device Drivers, but nothing seems to see this thing plugged in...

So, in the end, is it savable, and how?

EDIT: SOLUTION:
*********************************************

If your Cruz Tablet is stuck in USB Boot mode, there is no way to save it, nor any support from anyone online to solve this problem.
Apparently the JZ4760 Board is too much for anyone to want to deal with
[and since it's not something Fancy like a Galaxy Tab, no one Cares.]

If your Cruz tablet T301 is stuck in a boot loop, and you can't get to any recovery, give up.

It's a fancy paperweight now.
 
Valentinez
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#2  
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Thanks Meter 3
Posts: 13
Join Date: Aug 2012
Tablet Damn...

Well, after Searching the Google some more, found XBurst Tools, and some QtUSBBoot thingy which I've heard doesn't work, but I'll try it anyhow as soon as I install Linux. But I'm guessing if this doesn't work, I'll have to pray some programmer takes the time to make correct tools for this, or I'mma have to tell them it's a super paperweight, and they'll have to get another one...
[Not this Tablet though, cause it's prone to Errors + No support lol]

But if anyone has any leads I don't know about, I'd be happy to hear about them!
 
Valentinez
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#3  
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Posts: 13
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Prompt XBurst-Tools

So I got Linux up, and I have XBurst-Tools Running.
Problem is I have no idea where to find full documentation on how to use it...

I really just wanna flash the recovery, but after I

sudo usbboot
usbboot:> boot

..... [blah blah blah stuff]

Now checking whether all configured arg are vaild: YES
Current device setup information:
Crystal work at 12MHz, the CCLK up to 252MHz and PMH_CLK up to 84MHz
SDRAM Total size is 32MB, work in 4 bank and 16 bit mode
Nand page per block 126, Nand page size 4096, ECC offset in OOB 12, bad block offset in OOB 0, bad block page 127, use 1 plane mode

Ok it sees it... but how do I use nprog?
It says:

usbboot :>nprog
Usage: nprog (1) (2) (3) (4) (5)
(1) Start Page Number
(2) Image File Name
(3) device index number
(4) flash index number
(5) image type must be:
-n: no oob
-o: with obb no ecc
-e: with obb and ecc

I have no idea how to obtain the device and flash index numbers, or where the start page should begin...

Any sort of help would be appreciated!
 
Valentinez
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#4  
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Thanks Meter 3
Posts: 13
Join Date: Aug 2012
Prompt Found Something...

Well, the en.qi-hardware dot com page started working for me today, and it has listings on how to use the Xburst-Tools!

[I'll be posting my progress here as it looks like no one has ever recovered a Cruz Tablet T301, nor do they know how]

So When I solve the problem, I'll post it here~!
 
Valentinez
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#5  
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Thanks Meter 3
Posts: 13
Join Date: Aug 2012
Prompt Well, it Works.

Well, I know the Xburst-Tools work, cause after attempting to flash device

$ sudo usbboot
usbboot: > boot
usbboot: > nerase 0 4096 0 0
#Erase the NAND

usbboot: > nprog 0 mbr-xboot.bin 0 0 -n
#I figured that file needed to go there, but since I can't find documentation/help...

Well, it'll still boot into the JZ4760 USB Boot Mode, but now when it powers on, it doesn't say anything, no Cruz Screen, Nada.

But this does prove that it can communicate with, and alter the device.

Does anyone know what files I'm supposed to flash and where to restore this device?
I also tried using
[File2]
FileName=boot.img
StartAddr=0x300000 <<<<
NandOption=2

Exp:
usbboot: > nprog 0x300000 boot.bin 0 0 -n

But it seems to count that as a 0 as well.

any helpful insight is much appreciated!
 
Valentinez
Old
#6  
Junior Member - OP
Thanks Meter 3
Posts: 13
Join Date: Aug 2012
Prompt Cruz Tablet

If your Cruz Tablet is stuck in USB Boot mode, there is no way to save it, nor any support from anyone online to solve this problem.
Apparently the JZ4760 Board is too much for anyone to want to deal with
[and since it's not something Fancy like a Galaxy Tab, no one Cares.]

If your Cruz tablet T301 is stuck in a boot loop, and you can't get to any recovery, give up.

It's a fancy paperweight now.
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