I've S6102 flashed by S6802 by wrong
now Phone is dead boot & after tried to repair boot by riff still no download mode !!

Here is the log :

Open serial port...OK
Connecting to the RIFF Box...OK
Firmware Version: 1.34, JTAG Manager Version: 1.48
Selected Resurrector: [Samsung S6102 V1.0.4640.6533]

Connecting to the dead body...OK
Detected dead body ID: 0x07B3617F - CORRECT!
Set I/O Voltage reads as 3.01V, TCK Frequency is RTCK
Adaptive Clocking RTCK Sampling is: [Sample at 8 MHz]

Resurrection sequence started.
Establish communication with the phone...OK
Initializing internal hardware configuration...OK
Uploading resurrector data into memory...OK
Starting communication with resurrector...OK

Detected an Initialized FLASH1 Chip, ID: 0x00EC/0x0050 (512MB)
Selected Resurrection Data for the NAND Chip with Page size = 4KB

Flashing the dead body...OK
Resurrection complete!

I've tried many Resurrection speed also