I can't change the sim 2 imei. Please Help!!

[Ckandres]

I sell chinese mobile phones in Colombia and recently they keep without signal, so i did my research a little and i found you, so i learn all in one nigth but i can't still change the sim 2 imei, so all the dual sim mobiles only works with the sim 1 only, so the Infinity box shows this:

COM22 [Serial21] selected
Device: Autodetect 6205-6227 NOR
Checking data, wait...
advanced flash detection enabled
eeprom backup enabled, it may takes several minutes !
Action: "repair imei"
imei write method: mode-3
imei write channel: imei #2 for dual sim/mono-CPU
new imei: 350448011234470
Boot...
Press and HOLD Power button now !
19200 fixed
Connecting, wait...
error: boot phase#1 failed
Release Power button now !
in case of initial connection problem: on/off "Boot baudrate autoselect" box.
Boot Fail
Finished, time used: 2 sec
Remove/Install battery now !

Does anybody know what i have to do now?

Please a little of help thanks.

[InfinityHelp]

hello!

i think your problem is that you release power button to early.
you must keep it pressed, even if phone powers ON
arround 40 second must pass to completely boot 6205