excel ii working image anywhere ?

[alun]

I think you are correct as that it what I did. I have got the tb260 image (yarvik 264) loaded on but the wifi will not switch on and bluetooth not there. I edited the build.prop and got Bluetooth to appear, but again will not switch on but at least with this image you can get adb drivers working so there is still hope.
I used uberizer to dump the rom from a friends working excel ii and have the files boot.img, bootloader.img, data.tgz, system.tgz and recovery.img but can't push them back on to my device.
as part of this process, a generic cwm recovery is loaded onto the device and you have to format various partitions but this is where I come unstuck. also the cwm seems a bit unstable so I made a new one from the proper recovery using online recovery builder, put this in the uberizer changer_files directory so this is the one now loaded on but same results.
I will have to borrow my mates tab again and look at the proc/partitions file and compare against what I have currently.

[alun]

OK. Looks like I now have 99% working excel ii. The only thing that isn't working is the autorotate, and when I try to calibrate g-sensor it says not available. it could be a hardware fault as I have been working on this for ages and the tablet may have taken a trip or two against the wall!!!

Get Uberizer.
look at this page http://www.techknow.me/forum/index.php? ... 5#msg68875

and get the 11 partition recovery (its for A13 but worked).

then restored rom dump. i will upload the dump i have taken from a freshly factory resetted unit over the next day or two.

good luck, and if anyone has any ideas about the g-sensor problem then it wouls be appreciated.

[BigTed]

Nice one, you're doing well, got as far as installing cwm, so was looking for a good stock dump, was going to try to pull apart the one you posted in the early post. I'll wait till you up the stock one and have a play.

Keep up the good work..
Ted

[alun]

I have never used dropbox before so I hope this link works.

https://www.dropbox.com/s/hh95y8qrrsz3y ... 3_2241.zip

this is build number 97t3-d1-h1-h01-2508.2012113 whereas the img I got from Storage options is 97T3-D1-H1-H01-2508.20120726, described by them as the latest.
When I picked used my mates scroll I did notice the auto rotate wasn't working, I assumed he had it disabled but have asked him to check anyway incase there was a problem with the later build he has.
when you restore the rom using uberizer, at one point it reboots to recovery and you have to mount/format certain partitions. i could not mount or partition emmc but carried on anyway and got to the point where i am now.
i have since tried to flash_image the recovery.img, boot.img and bootloader.img using a terminal app and get "error scanning partitions: No such file or directory"

[alun]

I think my g-sensor is faulty. while looking for a working image I came across TAB360-364_Android_411_Jelly_Bean.img which did load but the screen size was wrong and touches on the screen did not match up with the screen but the auto-rotate was working. I reloaded this onto my 55262 and the rotate function is no longer working. I looked in init.sun4i.rc and it uses the same driver as my stock firmware (bma250.ko) so it must be the hardware.
I opened the back hoping to found a loose wire from the sensor but nothing was apparent. it may be that the g-sensor is a chip soldered directly onto the board.

Can anybody confirm this or describe the g-sensor hardware if it is not??

[Trashcooky]

I think my g-sensor is faulty. while looking for a working image I came across TAB360-364_Android_411_Jelly_Bean.img which did load but the screen size was wrong and touches on the screen did not match up with the screen but the auto-rotate was working. I reloaded this onto my 55262 and the rotate function is no longer working. I looked in init.sun4i.rc and it uses the same driver as my stock firmware (bma250.ko) so it must be the hardware.
I opened the back hoping to found a loose wire from the sensor but nothing was apparent. it may be that the g-sensor is a chip soldered directly onto the board.

Can anybody confirm this or describe the g-sensor hardware if it is not??

The Yarvik Tab 360-364 rom is designed for an 8" Cortex A8 tablet with a 800 x 600 resolution - different from the Excel's 800 x 480.
The Yarvik Tab 264 rom is compatible with the original Excel but probably not with the
Excel II which I believe has the nand partitioned differently to that of the original Excel - which I also believe is why many of the available versions of CWM 5.5 don't work "as is" on the Excel II as I understand it overwrite parts of either the system or boot loader nand partitions rather than a recovery partition as intended.

I am surprised that you were able to read the screen at all after flashing the Tab 364 onto an Excel II as the tab 364 is approximately 4 x 3 ratio whereas the Excel II is approximately 16 x 9 ratio which is why I have never tried it on my own original Excel and may possibly explain away some of your faults.

The main reason this Yarvik Tab 364 rom is listed in the Hacker's playground section of this forum was in the hope that a developer may re-cook it allowing installation of JB on an original Excel but as JB is now becoming more available as a stock firmware this all becomes rather academic with the forthcoming arrival of android 5 Key Lime Pie

In the meantime it would appear that you and Alun are making great in-inroads toward getting a CWM backup of the stock firmware for the Excel II. It seems as though you may need to resolve a CWM and Excel II conflict regarding where CWM writes itself on installation. I don't know enough to advise you how to or even if my information is accurate regarding this but presumably it can be sorted using command line instructions using adb to ensure CWM goes in the right partition.

Good luck, and thanks guys for providing this interesting thread which I have made a sticky.
Don't forget you can always get links to your -tested/modified/specific files suitable for download - posted in the Hackers Playground by pm'ing me.
If would be great if at the end of this journey one or both of you in colusion could write a how to covering.
1. how to install CWM on your Excel II
2. provide a working CWM stock firmware zip for the Excel II

Keep up the good work and good luck with it.

[Trashcooky]

@ alun - at the risk of sounding incredibly patronising (apologies if you think this...) have you ensured that auto rotate is switched on in the settings menu?

[alun]

it is. calbrating gsensor gives an error and sensor kinetic type programs do not recognise the hardware. I have loaded other driver using insmod with no joy. I am sure it is the bosch bma250 sensor as that is the driver installed on the stock firmware I have got working and also on the 364 rom I loaded, which is the Iast time I saw the screen rotate work even thoughbthe display was faulty. this tablet was dropped a few weeks ago and the back was loose so the sensor could be faulty. I have ordered a new one for a couple of quid, just don't know whether I'll be able to solder it on.

[BigTed]

Tried to do the back up with uber but now it just sits at the picture of the balloon, it boots in to cwm. From what i've read cwm sees partion i as one so it goes in the incorrect order.

If you get time a couple of good reads.
http://www.tabletroms.com/forums/presti ... 0x162.html

https://www.miniand.com/wiki/Allwinner/ ... +Hackberry.

Think the only way to update with the image is to have the image all partions and in the right place and the right size.

Ted

[BigTed]

Just an update, all working using the link posted in here, had to delete the caches too, but all working including the auto rotate.