Notice
● Please be sure to use Ampero II software (V1.4.0 or later) for the firmware update.
● To prevent any possible issue, please backup your patches first before updating.
New Features
1. Added NAM effect module, which supports importing NAM (Neural Amp Modeler) A2 files and natively loading them in Lite format.
Since NAM effects are computationally intensive, we recommend prioritizing the NAM module in an empty effect chain to create new patches.
Install the Ampero II Editor app (Mac or Windows) from hotone.com, connect the Ampero II Stomp via USB-C, open Global Settings > Firmware Settings in the editor, then click Check Update next to the current firmware version to download and flash the latest firmware.
What you need
Hotone Ampero II Editor — the software Hotone uses to load firmware onto the Hotone Ampero II Stomp. Download links below.
Notice
Please be sure to use the latest Ampero II V1.4.0 software to perform the firmware update.
To prevent any possible issue, please backup your patches first before updating.
Improvements, Changes & Bug Fixes
1. Fixed popping noise and power-on failure caused by DSP instability
2. Other minor improvements and bug fixes
Notice
We recommend that you use the newest (V1.3.0) Ampero II Stomp software.
New Effects
Effects with an HQ suffix indicate that the corresponding effect is using our latest modeling technology.
1. 6 new amp/preamp models added to the AMP/PRE AMP module:
(1) Petrus Clean/Crunch/Lead HQ – Based on Mesa/Boogie® JP-2C™️* amp head
(2) Soloist 100 Clean/Crunch/Lead HQ – Based on Soldano® SLO100* amp head
2. A new drive model added to the DRV module:
Noble Drive – Based on Nobels® ODR-1* overdrive pedal
3. A new delay model added to the DLY module:
Digital Delay HQ – Based on the delay sound of a popular 11-mode delay/reverb pedal
4. Two new reverb models added to the RVB module:
(1) 140 Plate HQ – Based on EMT® 140* plate reverberator
(2) Silver Linings – A special reverb creating a huge, lush reverb tone
*The mentioned manufacturers and product names are trademarks or registered trademarks of the respective owners. The trademarks were used merely to identify the sound character of this product.
Version V1.2.1 — 5 Sep 2023
Notice
We recommend you to use with newest (V1.2.1) Ampero II Stomp software.
New Effects
1.2 new drive models added to DRV module:
(1)Face Fuzz Ge – Based on Dunlop® Fuzz Face®* (Germanium transistor version) with a new modeling method
(2)Fryman Disrt – Based on a famous boutique UK-style hi-gain distortion pedal
2.3 new delay models added to DLY module:
(1)Glitch Delay – Digital delay with glitch-y feedback
(2)Icy Delay – Special delay effect with pitch shifted audio slices
(3)Bloodless Delay – Dreamy delay with pitched shifted audio slices and stereo crossfeed
*The mentioned manufacturers and product names are trademarks or registered trademarks of the respective owners. The trademarks were used merely to identify the sound character of this product.
Version V1.2.0 — 30 Mar 2023
Notice
1.We recommend you to use with newest (V1.2.0) Ampero II Stomp software.
2.Since we optimized Class PS effect with a new method, if you’re using Classic PS effect in your patches, after this update, please remember to re-select this effect in FREQ module.
3.Since we added new functions for EXP/FS FUNC (Global > Controls), if you set this to Single FS/Dual FS, after this update, please remember to reset this setting depending on your usage.
4.When you set EXP/FS to Main Vol (Pre/Post) after firmware update, please make sure EXP switches of your patches are all set to ON.
New Effects
1.2 new drive models added to DRV module:
(1)Prince of Drive – Based on Analog.Man™️ Prince of Tone*
(2)Basshammer – Based on Aguilar® Tone Hammer*
2.1 new modulation effect added to MOD module:
Stereo Expander – Virtual soundstage creator
3.1 new delay effect added to DLY module:
Multitap Echo – Multi-head echo machine simulator
*The mentioned manufacturers and product names are trademarks or registered trademarks of the respective owners. The trademarks were used merely to identify the sound character of this product.
New Features
1.No Cab function added (Global > I/O)
2.Main volume expression control (pre/post) added (Global > Controls > EXP/FS FUNC)
Improvements, Changes & Bug Fixes
1.Optimized Classic PS pitch shifting effect in FREQ module with a new method
2.USB Out 3-8 selections of Side Chain parameter available for AI Gate, Fast Gate, Custom Gate and Sweller
3.In some cases, some MIDI messages cannot be correctly transferred – FIXED
4.Abnormal parameter fixed: Tape Delay M
5.Other minor improvements and bug fixes
Tracked in 2 rigs on FW//RADAR.
Hotone Ampero II Stomp firmware FAQ
What is the latest firmware for the Hotone Ampero II Stomp?
The latest firmware for the Hotone Ampero II Stomp is version V2.5.0, released on 30 Jul 2026. FW//RADAR last checked Hotone's official page on 27 Oct 2026.
How do I update the Hotone Ampero II Stomp?
Install the Ampero II Editor app (Mac or Windows) from hotone.com, connect the Ampero II Stomp via USB-C, open Global Settings > Firmware Settings in the editor, then click Check Update next to the current firmware version to download and flash the latest firmware. Full instructions on Hotone's official firmware page.
What software do I need to update the Hotone Ampero II Stomp?
You need Hotone Ampero II Editor, available from hotone.com.
Where can I download Hotone Ampero II Stomp firmware and drivers?
Directly from Hotone's official firmware page — FW//RADAR links to the source and never hosts firmware files. Official firmware page →
Where can I find the Hotone Ampero II Stomp manual?