Installed Omni rom... I9000 ... no recovery and no download mode anymore

Hey guys....

I need some help here with my cousins i9000 ...
Years ago when this galaxy came out... i did a lot of flashing and all were "success"
I did flash on my i9505 those days... worked fine.. now im stuck on my cousins i9000
Dont know if i had luck all this years or what... cant fix it..

I9000 had Froyo... if i remember corretly.. and if i remember right.. i instaled CWM... flashed with omni-4.4.4-20150520-galaxysmtd-FINAL .... the phone flashed.. started up... and working..

Left it there now for dont know... 3 weeks.... today i powered up phone... checking the Rom... there was no Google play..no Google APPs...

I installed Rom manager over dropbox.. there i found GAPPS.. downloaded them..... here comes the problem.. Install and Reboot button... i can click.. and there is nothing... Then i tried to instal stock rom back.. over zip... problem came again with reboot.... it doesent want to...

Than i had enough... i try the 3-button combination... for Recovery or Download mode... It doesent work...

No if someone can help me how to get download mode.. so i can flash back with Odin.. coz...even Odin doesent recognize phone anymore...

Please help me with this one :) Tnx

Simi

Download from this link