bricked device, prepare idb failed

[RM20]

hey,

I got some weird issue with the device. it got bricked all the sudden, and so I tried to install a rom or perhaps ubuntu, and the installing failed with the message "prepare idb failed", and from a quick search I saw the solution includes connecting two electric points or pins on the board itself, but there is explaining for a lot of rk3188 devices out there, exept mine, which is "RK918_v1.20 141208 1520", picture of the board is included.

if someone have the exact same device, and know how to solve it, please show me which two pins I need to connect and include a picture it will help me a lot I'm trying to figure it out myself for months now
Thanks in advance

[gefattern]

hey,

I got some weird issue with the device. it got bricked all the sudden, and so I tried to install a rom or perhaps ubuntu, and the installing failed with the message "prepare idb failed", and from a quick search I saw the solution includes connecting two electric points or pins on the board itself, but there is explaining for a lot of rk3188 devices out there, exept mine, which is "RK918_v1.20 141208 1520", picture of the board is included.

if someone have the exact same device, and know how to solve it, please show me which two pins I need to connect and include a picture it will help me a lot I'm trying to figure it out myself for months now
Thanks in advance

Hi RM20 ,

it is called MaskRomMode , look here is a Solution :

http://ugoos.net/blog/reflashing-in-maskrom-mode-if-device-bricked

it works for all RK Devices , good luck .

gefattern

[RM20]

Hi RM20 ,

it is called MaskRomMode , look here is a Solution :

http://ugoos.net/blog/reflashing-in-maskrom-mode-if-device-bricked

it works for all RK Devices , good luck .

gefattern

Thanks, but again in my device there isn't any of the components from that link so exept the software part, it's not helping. Look at the picture I uploaded

[RM20]

I'm uploading more pictures that shows the board the the components better In different lighting conditions

[gefattern]

Hi RM20 ,

strange , no NAND Chip , and on the back of the PCB ??? ,

maybe only a swapped one , dont know if this works ??? ,

i am no Dev . The Box is called ??? what brand ???

nice Day

gefattern

[RM20]

Hi RM20 ,

strange , no NAND Chip , and on the back of the PCB ??? ,

maybe only a swapped one , dont know if this works ??? ,

i am no Dev . The Box is called ??? what brand ???

nice Day

gefattern

there is the back of the device. and like i said, this is RK918_v1.20 141208 1520, by rockchip from the rk3188 cs918 family. there is a nand chip, but as you can see it's legs are hidden below. the only place i found people asks about the device, is in a russian forum  here 

http://4pda.ru/forum/index.php?showtopic=490384&st=10280

[gefattern]

HI RM20 ,

i can not see any Nand there , u mean the Chip right beside the CPU ,

so the Legs can not be reached ??? and what Legs to see on the back ,

without a Chip , have you ever tried them ???

Before brick it was connected and running ???

good luck

gefattern

[RM20]

HI RM20 ,

i can not see any Nand there , u mean the Chip right beside the CPU ,

so the Legs can not be reached ??? and what Legs to see on the back ,

without a Chip , have you ever tried them ???

Before brick it was connected and running ???

good luck

gefattern

Yes I tried the pins that behind, and without luck, and yes the nand chip's legs are unreachable and yes, before the brick it was up and running perfectly
 

[RM20]

please someone had this exact model and can help me?

[RM20]

OK guys for now I got some kind of breakthrough. I finally got a blue square in the batchtool, by connecting pins in this chip as you can see in the pictures. The problem is now that even if I won't move and keep the connection, the mask rom mode in the pc won't hold more than 3 seconds after pressing on restore and it will make a usb disconnection sound. someone know anything?

update: now I got a reconnection sound, but the idb failed keeps showing