Mur4iks KDZ and system partition was not nice to my phone. It got the disease named "DEAD PHONE". BTW my friend (He is mobile mechanic) managed to get "Download Mode" using Riff Box. I had to pay $9 to him. Then from the download mode i installed Euro+Fastboot KDZ.
The dead recovery was 100% okay except this problem...
1) I can't disable Airplane Mode
2) Phone shows "No Service" with or w/o sim, both.
3) IMEI is 0 and many unknowns in "About Phone" tab.
I installed many custom roms but no Luck yet. I tried "LG Support Tool" to get back to Official 2.1 but instead of GT540 it shows LG PV500.
Currently i have Google Nexus on it.
Any working Idead from XDA Devs.....????
For me GT540 is a sibling to MS WinXP (died after 12+ years on 8th April, 2014)