need
- Pandora D-605 (keychain)
- SEGGER JLINK/JTAG (programmer)
- JFLASH JLINK 6.12a (soft)
- firmware (see in darknet)
- hands not in
/dev/ass - f*cking m$ windows (im using win7 32bit)
pinout JTAG interface to keychain
- keychain - 6pins interface
- JTAG - 20pin interface
| keychain PINs | JTAG PINs | |
|---|---|---|
| 1 | GND | 18, 20 |
| 2 | VCC | 1 |
| 3 | RESET | 15 |
| 4 | CLK/TCK | 9 |
| 5 | DIO/TMS | 7 |
| 6 | SWO/TDO | 13 |
flashing device
!!! do not forget take out the battery from keychain.
- connect keychain to programmer
- connect SEGGER programmer to PC and wait to initialise device/driver
- connect mini-USB on keychain and wait (red led must is on), hold button 1 on keychain (for shutdown) and wait for PC initialise (beep new device)
- start JFLASH soft, set cpu is EFM32LG995F256 (32 bit / 48 Mhz) and SWD speed to 4000
- unlock chip
- erase chip
- flash
.binfirmware - lock chip
- prank gone right xD
enjoy
only just for fun ^_^