{"id":184251,"date":"2026-11-13T17:41:07","date_gmt":"2026-11-13T15:41:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/esp-kvm-0-83-0-i-otkrytaya-proshivka-dlya-jetkvm-mini"},"modified":"2026-11-13T17:41:16","modified_gmt":"2026-11-13T15:41:16","slug":"esp-kvm-0-83-0-and-open-source-firmware-for-jetkvm-mini","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/esp-kvm-0-83-0-and-open-source-firmware-for-jetkvm-mini","title":{"rendered":"ESP-KVM 0.83.0 and open firmware for JetKVM Mini","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A new version of the open firmware ESP-KVM 0.83.0 has been released, turning the ESP32-P4 microcontroller board into an IP-KVM for remote access to a computer's screen, keyboard, and mouse via a browser. The device connects in front of the target machine's HDMI and presents itself as a USB keyboard and mouse, while streaming the image and controls to the browser. Nothing needs to be installed on the target machine; it works starting from the BIOS level. The code is written in C and is distributed under the Apache 2.0 license. <\/p>\n

The new release includes firmware for the JetKVM Mini device with a ready-made KVM<\/a>, measuring 42x42x23 mm. The JetKVM Mini is equipped with an ESP32-P4X board, 32 MB of PSRAM, an HDMI bridge TC358743, a 100 Mbps Ethernet port, a microSD slot, and a square 240x240 display on the ST7789. After flashing, all verified features work, including streaming at 1080p50 quality, Ethernet, network updates, keyboard, mouse, display, side buttons, and microSD. <\/p>\n

The stock firmware of JetKVM only accepts signed updates, and to reflash it, you must enable 'USB Debugging' mode in its settings; otherwise, the flashing port will disable after a couple of seconds from startup, and connect the JetKVM Mini to the computer via the EXT port. It is advisable to create a backup of the Flash before writing \u2014 there is a button for this on the flasher\u2019s page, which reads all 16 MB directly from the browser using esptool-js. You can restore the factory firmware from the created backup or from a recovery image that JetKVM publishes for each model. Subsequently, updates are downloaded over the network, and the old version remains in the second half of the Flash in case a rollback is needed.<\/p>\n

Unfortunately, the JetKVM Mini does not output sound via HDMI (the TC358743 can deliver audio over I2S to three outputs, but on this board, they are not connected anywhere). To work around this limitation, the firmware presents the device to the target machine as a USB speaker. After power-up, the target machine recognizes the device as 'ESP-KVM Speaker' \u2014 this is UAC2, 48 kHz, 16-bit, stereo, with one isochronous OUT endpoint. The frequency is tied to SOF frames, so a feedback endpoint is not needed. The interrupt counts the incoming bytes and activates a task every 5 ms that segments the stream into the same blocks received from I2S.<\/p>\n


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\r\n \"Play\r\n
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In version ESP-KVM 0.83.0, the ability to choose which pages the screen displays on the device is also provided (if all are removed, only the logo remains). It added the option to turn off the screen after a set time. The program for the target machine espkvm-agent has been renamed to ESP-KVM Tools to avoid confusion with AI agents. Changes in releases after 0.65 include:<\/p>\n