@fnirsi_us: Step-by-step guide to operating the LCR-ST1 and upgrading the firmware.#FNIRSI #LCRST1#BridgeTweezer#OperationTutorial#FirmwareUpgrade#ElectronicDevices#DIYElectronics#TechTools#ElectronicsTutorial#MultifunctionalTools#ElectronicEngineering#UpgradeFirmware#TechTutorial#ElectronicTester#TechInnovation#LCRTools#BridgeTweezer#TikTokShopRestock