On April 16, during preparations for the attempt, his climbing partner, Tenji Sherpa, suffered frostbite, which would take some weeks to heal. Steck carried on with scouting and acclimatisation, climbing up to Everest's Camp 2, en route to the South Col. On April 29, he changed his plans, texting Tenji that he would climb the nearby peak of Nuptse instead, and did not respond to a follow-up question.