MK808-B (original) JB 4.2.2 Official - Finless ROM 2.1

[pe1dnn]

Doesnt matter which computer or USB port i use.
Interestingly the ROM works for the first time after the Flash.
But as soon as i restart (no matter whether via power plug or shutdown) it hangs in the BootScreen.

The programs writes data to flash and then reads it back, and when it is read back the data has changed all by itself. When the data is in an not often used remote area of the ROM then it may even work okay, but the situation is unreliable and uncertain.

There are several points at which the data can become corrupted.
- During transfer while writing
- During writing
- When the data is kept in storage on the flash chip
- During reading
- During transfer while reading

The most serious is the one in the middle one because that means that the flash cannot retain data and bits are lost over time. The other ones are often caused by instable power or low quality cables. It can also occur at the PC side (especially the front USB connections), but you tried different PCs and different ports.

I suspect the unit is powered over USB only and the power is insufficient, the occasional undervoltage then corrupts data in transfer or the read or write cycles on the flash.

Try this. To put the unit in flash mode:
- Disconnect all power (not only the power supply but also power entering over USB connections)
- Push the reset button
- Connect the USB cable to the PC while keeping the reset button pressed, then release the button - now the unit will boot
- Now the extra step: connect the powersupply now too! - so the unit is not only powered by the PC but also by the powersupply. The unit will remain in flash mode because the PC connection is active
- Now flash the unit, at least there will be enough stable power not to wreak havoc with the data

Be sure to use a stable power supply, the supplied power supply is low quality, I use an original PS Vita powersupply which is of good quality (only needs a slight mod to fit the USB plug).

If ik keeps failing then it could still be a bad flash chip, in that case there is nothing to do then to send it back for repair or replacement. In that case the is also the possibility of a dirty hack by changing the paramter file to skip over the bad spot on the chip, but that's realy hacking and the chip would still be bad and might fail althogether later... But if you are desparate...

[Mandrake2]

Hi, thanks for your's job.
Can i use autorotate's app in this rom?

Sorry for reply, I have now installed 1.7 but have need rotate app for tv streaming (videomediaset).

thanks for reply.

[nWoStyle]

I feel like the biggest noob on the planet for asking, but I can't even get past step 1 in the flashing process.
I can't seem to find how to change my mk808b into 'mass storage mode' anywhere in the settings.
I tried to do the reset button flash mode as well, so while my device manager recognizes the device as RK30, Finless ROM flash tool does not. Help please.

Mk808b from Geekbuying
Android 4.2.2
Kernal 3.0.36+ rjh_V_401j2 #28
Build Number mk808b_v403j2

[leolas]

Re: NEW - MK808-B (original) JB 4.2.2 Official - Finless ROM 2.1

I feel like the biggest noob on the planet for asking, but I can't even get past step 1 in the flashing process.
I can't seem to find how to change my mk808b into 'mass storage mode' anywhere in the settings.
I tried to do the reset button flash mode as well, so while my device manager recognizes the device as RK30, Finless ROM flash tool does not. Help please.

Mk808b from Geekbuying
Android 4.2.2
Kernal 3.0.36+ rjh_V_401j2 #28
Build Number mk808b_v403j2

That option was removed from the stock rom in 4.2 firms.
With the stick powered off, only press reset button while you connect the usb cable to the OTG port. The your windows will sounds like new hardware found, and the Finless flash tool shows found rkdevice in flash mode or so.

leolas

[pe1dnn]

With the stick powered off, only press reset button while you connect the usb cable to the OTG port.

Just a tip which makes it easier: Connect the cable to the OTP port but do not connect the PC. Then presss the reset button and connect the cable to the PC.

I found this is often easier than fiddling with the OTP port because you can plugin the USB in most PC's with one hand while keeping the other steady to keep the reset button pressed.

[leolas]

Re: NEW - MK808-B (original) JB 4.2.2 Official - Finless ROM 2.1

Just a tip which makes it easier: Connect the cable to the OTP port but do not connect the PC. Then presss the reset button and connect the cable to the PC.

I found this is often easier than fiddling with the OTP port because you can plugin the USB in most PC's with one hand while keeping the other steady to keep the reset button pressed.

Good in some situations, my desktop is hard to allow connect usb wires, so i have a Miniusb and microusb connected everytime, but yes, for some people it will be easier. Thanks.
Remember, try to use the usb ports that are in the mainboard, the frontal usb some times give problems, to flash better use usb ports from mainboard, and usb 2.0, 3.0 usb ports or 1.1 some times fail again.
And quality usb cables from a branded mobile phones are better(most of the times) than the stock one, if someone have problems flashing try with other usb cable.

leolas

[Sebastl]

Thx pe1dnn I Will inform you guys as soon as i got time to fiddle around with that again

[Mandrake2]

I apologize in advance to redo the same question.
I can not try the 4.2.2 on my mk808B without knowing if the rotation is enabled.
Someone could check whether the rotation is enabled.


thanks

[nWoStyle]

That option was removed from the stock rom in 4.2 firms.
With the stick powered off, only press reset button while you connect the usb cable to the OTG port. The your windows will sounds like new hardware found, and the Finless flash tool shows found rkdevice in flash mode or so.

leolas

Thanks, however i found it much much easier to do it with the android device terminal emulator and typing in:
su
reboot bootloader

[Shiny Shoes]

this is the same but non b version? http://www.freaktab.com/showthread.p...inless-ROM-2-1

[djinkyman]

720p kernel/boot is not sending out 720p

Hello,

I successfully flashed this ROM to my MK808B, with the 720p boot/kernel set, but upon booting up (and once Android has started) it is not sending out a 720p HDMI signal, but something higher, likely 1080p.

I have an older monitor that is not capable of taking a signal of that resolution, so it promptly complains, "signal present but out of range 67.5 kHz / 60Hz". This indicates there IS a signal, and that Android boots up successfully, but not in 720p despite being set to that.

Any way for me to fix this display setting mistake without finding someone with a 1080p screen?

add.: was thinking... Is it possible to get 1680*1050 with HDMI on Android somehow?

[diontoradan]

did i miss something?

everytime i use "erase nand" > "flash rom" it always said "Test Device Failed".
then i reflash using rockchip batch tool (with another rom) after that i flash rom without erase nand successfully no error. but when i plug it in tv, i got boot loop.

then i go to flash tool and erase nand again, then plug in to tv, got black screen.
then i try to reflash the rom, but it always stuck "test device failed".

[pe1dnn]

i reflash using rockchip batch tool (with another rom) after that i flash rom without erase nand successfully no error. but when i plug it in tv, i got boot loop.

Are you shure you do not have a clone?

[diontoradan]

im finished the setup now. the device is booting nicely. i don't know why if i erase nand, i will always endup in boot loop. so i flashed straight from the other rom.

[djinkyman]

Finless, would it be possible for you to confirm that you have noticed the bug I posted about a few days ago (3-4 posts up)?

I finally managed to get access to a 1080p capable screen so I could boot my MK808B with Finless 2.1 and change the video setting from 1920*1080 to 1280*720, and now I can use it at home. It runs good, and is stable when I overclock my 808B from 1008 mhz to 1275 mhz.

I am looking forward to your next ROM release, but I am hesitant to install it with the risk that the boot/kernel video mode is still set to 1080p even on the 720p boot/kernel.