Hi Ayssathi, as you ask, i'm located in Germany. For the problem, i believe you're in much better position than i am in respect of diagnostic opportunities. I for one haven't yet managed to open the device (no screws, perhaps i should try using a vacuum cup to lift the display off the housing). Therefore, i've virtually no access to any diagnostic connections right now aby cobalt - Allwinner A10
Hi Ayssathi, If I find out something, i'll let you know. Kind Regards, Cobalt -- My tablet is a PROTAB2-IPS9 (V1.0)by cobalt - Allwinner A10
Hacking an a10 tablet is extremly painful and sub-standard IHMO mostly causes by insufficient diagnostic means, most particular missing tty lines and an insufficiently documented (i.e. only "leaked") multi-stage boot and setup process. Additionally, vendors produce small charges of very different tablets, so that no proper reference tablet is available to focus joint hacking. I for oby cobalt - Allwinner A10
Hi, booting my tablet from SD is highly erratic. To describe the effect, from e.g. 17 boot attempts only 7 succeed. This does not mean, that half of the attempt work, but instead, long series of failures can occur, although i initialized device before each attempt. I wonder, whether this reflects the known state of the spl/u-boot implementation or any known issue. I'm using a recentby cobalt - Allwinner A10
To close the thread on the above topic, i write to report, that eventually, i got the device booted using this rescue system. The problem was, that this particular device needed a specially crafted uboot/spl. The difference were the particular parameters for the dram. They differed even from the ones the device in Ithamar's hands. There are more but one version of the tablet out in the wild,by cobalt - Allwinner A10
As äxl pointed out, some support for the Protab2 IPS9 has been added to linux-sunxi, lately by Ithamar, among which i found this patch, which relates to the dram parameters of uboot. I'm not deep enough into uboot internals to judge whether this may or may not explain my bad fortune with this and other images. Perhaps something is really different with my particular device, meaning thatby cobalt - Allwinner A10
This is a media, download or dd error. $ md5sum a10* 1fec0663cd0f18fb38f88fa859e794d9 a10_base-1.3.img d53eae8f3e6a7a02a48070efa72b194d a10_base-1.3.zip The image contains a single vfat partition which should be mountable whenever download and dd was successful.by cobalt - Allwinner A10
Hi All, I have tried some sdcard images on a Protab2 IPS9 without success and focused finally on this rescue image as it is the most defined one. The effect is, that after this or any other image i tried, i simply got a locked-up device. More precisely, the LCD remains blank. So does the HDMI. I do not receive a wifi connection, nor is a /log directory created on the sdcard as it should byby cobalt - Allwinner A10