This gps has original Ublox module that can be Flash update firmware ... Ublox NEO-M8N  GPS with Protective Shell for PIX PX4 PixhawkThis module is superior quality. it can easy lock 21-26 settlites within few seconds. Description:Receiver type: 72-channel u-blox M8 engineGPS/QZSS L1 C/A, GLONASS L10F, BeiDou B1SBAS L1 C/A: WAAS, EGNOS, MSASGalileo-ready E1B/C (NEO-M8N)Nav. update rate1 Single GNSS: up to 18 HZConcurrent GNSS: up to 10 HzPosition accuracy: 2 2.0 m CEPAcquisition2 Cold starts: 26 sAided starts: 2 sReacquisition: 1.5 sSensitivity2 Tracking & Nav: –167 dBmCold starts: –148 dBmHot starts: –156 dBmAssistance AssistNow GNSS OnlineAssistNow GNSS Offline (up to 35 days)3AssistNow Autonomous (up to 6 days)OMA SUPL & 3GPP compliantOscillator TCXO (NEO-M8N/Q),Crystal (NEO-M8M)RTC crystal Built-InNoise figure On-chip LNA (NEO-M8M). Extra LNA for lowest noise figure (NEO-M8N/Q)Anti jamming Active CW detection and removal. Extra onboard SAW band pass filter (NEO-M8N/Q)Memory ROM (NEO-M8M/Q) or Flash (NEO-M8N)Supported antennas Active and passiveOdometer Travelled distanceData-logger For position, velocity, and time (NEO-M8N)Operating temp. –40° C to 85° CStorage temp. –40° C to 85° C (NEO-M8N/Q), –40° C to 105° C (NEO-M8M)RoHS compliant (lead-free)Qualification according to ISO 16750Manufactured and fully tested in ISO/TS 16949 certified production sitesUses u-blox M8 chips qualified according to AEC-Q100Supply voltage 1.65 V to 3.6 V (NEO-M8M), 2.7 V to 3.6 V (NEO-M8N/Q)Power consumption4 23 mA @ 3.0 V (continuous),5 mA @ 3.0 V Power Save Mode(1 Hz, GPS mode only)Backup Supply 1.4 to 3.6 VFeatures:Quick satellite searching, only need 10s to find 6 satellite in open spaceBuilt-in compass, refresh rate up to 10GHz0.6 metersultimate accuracy,actually almost 0.9 meters,greater than the previous generation NEO-7N 1.4-1.6 meters accuracySupport GPS+BD+SBAS, or GPS+GLONASS+SBASsupport GPS/QZSS L1 C/A, GLONASS L10F, BeiDou B1 protocol etc.Package Included:1 x GPS Module

Original Ublox NEO-M8N GPS for PX4 Pixhawk