RNEG myway no satelite found

[PSAcars]

Hello to all. This is my c5 x7 satnav with no satelite found. Other part of head unit is ok. So far I put new antenna from citroen --- ( no sat with new antenna ),
other head unit from working car --- ( with my antenna working fine )
try to update to v40 from v29 --- ( no sat found ).
Does any one hade problems like this? Can it be still software problem?

[PSAcars]

Hello to all. Little more info, firs ic in path of gps signal is se4110l, tested connection to main cpu ( bga mount mcu ) I have ordered new se4110 to swap and try again. From working navigation I took signal map and compare to mine.

[eric paris]

hello,

do you find a solution ?
l have the same problem
thanks

[eric paris]

hello,

my rneg work again
disconnect the rneg for 15-20 min
connect it
reset , press 1+3+5
the gps come back but the car in 50 meter shifted the road on the map
re install the last firmware , already install but re install
format the sd card with map and re copy map on the sd card
miracle it work fine