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This paper describes advances performed towards the realization of the ARGITU compact neutron source. The first part of the accelerator developed by ESS-BILBAO is made of a 2.7 GHz ECR proton source, a two-solenoid Low Energy Transport Section (LEBT) and a 352.2 MHz Radio Frequency Quadrupole (RFQ). We describe the main advances performed over the last year. The Ion source and LEBT have been in operation since 2019. On the installed part, some improvements have been implemented in the ion source such as a new RF coupler, RF stability loop, and a new RF source based on Solid State technology. On the RFQ side, the tuning algorithm has been validated in the cold model, the new coupler is being manufactured, the RF testing facility is being installed and the machining of the remaining segments is in good progress. [ABSTRACT FROM AUTHOR]