HTC One M7 No IMEI + Signal topic

Hi everyone!


So, i got some problems with my HTC(ATT) ... a couple days ago it went on restarting when he wanted for several times or it didt recognized the sim card, and after that just worked fine. And yesterday i thought it was the ROM(MaximusHD | 52.0) the problem and I decided to move to the official version of lollipop, from HTC. I updated the firmware from 3.12... to 7.... , and then installed the RUU. But after 2 hours it restarted again and didn't recognized the sim card. And when it doesnt work the sim card, the phone does not have any IMEI. It can come to normal if i am making several restarts and are pretty lucky. The thing that i noticed is it happens when the battery is low (<35%)

(bootloader) version: 0.5
(bootloader) version-bootloader: 1.61.0000
(bootloader) version-baseband: 4M.32.3218.06
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 7.23.502.1
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: HT...
(bootloader) imei: 35...
(bootloader) meid: 00000000000000
(bootloader) product: m7_ul
(bootloader) platform: HBOOT-8064
(bootloader) modelid: PN0712000
(bootloader) cidnum: CWS__001
(bootloader) battery-status: good
(bootloader) battery-voltage: 3866mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: dirty-0e2a13e5
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!