On Mon, 12 Jan 2015 09:25:27 +1100 Julian Calaby <julian.cal...@gmail.com> wrote: > On Wed, Dec 31, 2014 at 11:39 AM, Siarhei Siamashka > <siarhei.siamas...@gmail.com> wrote: > > On Mon, 3 Nov 2014 09:52:03 +1100 > > Julian Calaby <julian.cal...@gmail.com> wrote:
[...] > >> If anyone has any experiments they'd like me to run that won't disturb > >> the NAND storage or require an external display, please let me know. > >> > >> Other than that, my next steps are: > >> 1. Enjoy it for a bit > >> 2. Convince it to get into FEL mode (I'll try buttons then the SD card) > >> 3. Root the stock Android distro > >> 4. Open it > >> 5. Complete the NDH > > > > You can start by just creating a page for your tablet at the > > linux-sunxi wiki and populate it with some pictures. > > > > And we need a FEX file from your tablet. If we had it in the > > sunxi-boards repository, then we could for example see whether > > its LCD display is likely to be easily supported by the latest > > u-boot LCD patches: > > http://linux-sunxi.org/LCD > > Right now even getting the FEX is difficult I would say, the first thing to check would be to see whether you can activate the FEL mode. Try different methods listed on the wiki page: http://linux-sunxi.org/FEL#Triggering_FEL_mode Then it makes sense to figure out whether you have a real hardware FEL button or not. In the FEL mode, you can use the 'fel' tool to read the device memory. This way you can check the status of http://linux-sunxi.org/SRAM_Controller_Register_Guide#SRAM_VER_REG You can do this by running: $ fel hex 0x1C00024 4 01c00024: 00 07 00 00 __ __ __ __ __ __ __ __ __ __ __ __ Then try testing different buttons. While the button is pushed, run the "fel hex" command again: $ fel hex 0x1C00024 4 01c00024: 00 03 00 00 __ __ __ __ __ __ __ __ __ __ __ __ If you see that "00 07 00 00" has changed to "00 03 00 00", then you got the right button. Having a hardware FEL button makes the tablet really unbrickable. Pushing it changes the boot priority on A31(s) to prefer SD card over NAND. And if there is no SD card inserted, then the FEL mode gets activated for USB boot. If you don't have a real hardware FEL button, then the firmware in NAND might be checking the buttons status while booting and switching to the FEL mode in a "software" way. Destroying the firmware in NAND may potentially turn the device into a nice brick. Anyway, in the case of non-hardware FEL button, the following may work for retrieving script.bin (which can be converted to FEX): http://linux-sunxi.org/Retrieving_device_information#Retrieving_data_over_USB_in_FEL_mode Once you figure out at least something about this tablet, please create a wiki page for it. > as I'm yet to find a method to root the tablet. As for rooting Android, I used a rather suspicious method. It involved some Root_Onda_4.4.2_V4.4_LZ.zip file, which is flagged as possibly containing a spyware/trojan: https://www.virustotal.com/en/file/9b33e640e7b904dc2d74b1501a9b1536b62bb5ecc3b597ef26b8eaa5d27db7fa/analysis/ Since I could always re-flash my MSI Primo81 tablet to the factory state with the PhoenixSuite recovery image provided by MSI, I just did not care about any possible short lived Android trojans :-) -- Best regards, Siarhei Siamashka -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
